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Fukunishi A, Machida M, Fukushima S, Inoue S. Travel medicine providers' opinions on the dengue vaccine TAK-003 as a travel vaccine and the need for decision-support information and materials before its launch in Japan. Hum Vaccin Immunother 2025; 21:2483560. [PMID: 40194548 PMCID: PMC11980447 DOI: 10.1080/21645515.2025.2483560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2024] [Revised: 02/28/2025] [Accepted: 03/20/2025] [Indexed: 04/09/2025] Open
Abstract
TAK-003 is a dengue vaccine introduced in dengue-endemic countries and considered for travelers. Although not yet approved in Japan, inquiries from travelers are increasing. With limited evidence about vaccine use for travelers, consolidated expert opinions would aid in vaccination decision-making. Therefore, this study examined the opinions on TAK-003 and the need for decision-support information and materials among travel medicine providers before its launch in Japan. Participants recruited from the Japanese Society of Travel and Health were assessed on their intention to receive TAK-003 themselves when visiting dengue-endemic areas, and their intention to recommend it to travelers, with responses provided separately for short- and long-term travels. Participants who did not recommend TAK-003 provided reasons using multiple-choice questions. All participants were asked about their need for supporting information to aid in vaccination decision-making. Among the 154 respondents, over half intended to receive (55% for short-term, 75% for long-term) and recommend (53% for short-term, 75% for long-term) the vaccination. The primary reasons for not recommending it were concerns about efficacy and safety, which were also the most requested support information. These findings suggest that many travel medicine providers have positive opinions on TAK-003 as a travel vaccine and need decision-support information and materials.
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Affiliation(s)
- Atsuko Fukunishi
- Department of Preventive Medicine and Public Health, Tokyo Medical University, Shinjuku-ku, Japan
| | - Masaki Machida
- Department of Preventive Medicine and Public Health, Tokyo Medical University, Shinjuku-ku, Japan
- Department of Infection Prevention and Control, Tokyo Medical University Hospital, Shinjuku-ku, Japan
| | - Shinji Fukushima
- Travellers’ Medical Center, Tokyo Medical University Hospital, Shinjuku-ku, Japan
| | - Shigeru Inoue
- Department of Preventive Medicine and Public Health, Tokyo Medical University, Shinjuku-ku, Japan
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Hu J, Horton BP, Yeo TW, Sung JJY, Steve YHL. Mosquito and global dengue cases in a warming world. BMJ Glob Health 2025; 10:e014688. [PMID: 40335075 PMCID: PMC12056631 DOI: 10.1136/bmjgh-2023-014688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Accepted: 04/10/2025] [Indexed: 05/09/2025] Open
Abstract
Dengue presents a significant global health challenge, affecting 50-100 symptomatic infections every year and placing immense strain on healthcare systems in tropical and subtropical regions. However, future projections of dengue infections in a warming world remain unclear. We used the support vector machine (SVM) and artificial neural network (ANN) models with Aedes mosquitoes and dengue records from 1960 to 2019 to comprehensively assess the effects of climate change and socioeconomic conditions on the distribution of mosquitoes and the global dengue incidence rate. The SVM and ANN models were applied to project the global future incidence rate and infections during 2021-2040, 2041-2060 and 2061-2080 under various climate change and socioeconomic conditions in a 5 km spatial resolution. We found a geographical distribution expansion of Aedes mosquitoes and dengue in future years, especially in higher latitudes such as North America and Europe. It was estimated that 77 (confidence interval: 40 to 198) million yearly global infections will occur during 2041-2060 under the Shared Socio-economic Pathway SSP2-4.5, a 57% increase of 49 (26-127) million compared with 2000-2019. The rise in annual infections is primarily attributed to the growing incidence rates driven by rising temperatures and the enhanced suitability of Aedes aegypti, and an expanding human population. Our high-resolution projection provides support to local control measures to minimise health impacts from dengue. Specifically, the Aedes mosquito control programmes such as eliminating the Ae. aegypti breeding sites are recommended in Africa and South Asia, where dengue is particularly severe in all climate change and socioeconomic conditions.
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Affiliation(s)
- Jie Hu
- Centre for Climate Change and Environmental Health, Nanyang Technological University, Singapore
- Asian School of the Environment, Nanyang Technological University, Singapore
| | - Benjamin P Horton
- Asian School of the Environment, Nanyang Technological University, Singapore
- Earth Observatory of Singapore, Nanyang Technological University, Singapore
- School of Energy and Environment, City University of Hong Kong, Hong Kong, People's Republic of China
| | - Tsin Wen Yeo
- Lee Kong Chian School of Medicin, Nanyang Technological University, Singapore
| | - Joseph J Y Sung
- Lee Kong Chian School of Medicin, Nanyang Technological University, Singapore
| | - Yim Hung Lam Steve
- Centre for Climate Change and Environmental Health, Nanyang Technological University, Singapore
- Asian School of the Environment, Nanyang Technological University, Singapore
- Earth Observatory of Singapore, Nanyang Technological University, Singapore
- Lee Kong Chian School of Medicin, Nanyang Technological University, Singapore
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Green A, Wu S, Di Pasquale A, Pang T. The Role of Digital Opinion Leaders in Dengue Prevention Through Health Promotion and Public Health Collaboration: Qualitative Semistructured Interview Study. J Med Internet Res 2025; 27:e70997. [PMID: 40279576 PMCID: PMC12064970 DOI: 10.2196/70997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2025] [Revised: 03/13/2025] [Accepted: 03/18/2025] [Indexed: 04/27/2025] Open
Abstract
BACKGROUND Dengue fever is a significant public health concern. The advent of social media has introduced digital opinion leaders (DOLs), health care professionals with substantial online followings who play a pivotal role in disseminating health information and combating misinformation. OBJECTIVE We aimed to investigate the role of DOLs in dengue prevention and explore their preferences for collaboration with health sector entities to strengthen dengue prevention initiatives. METHODS A qualitative study was conducted using semistructured interviews with 37 purposively selected DOLs from 8 countries in Latin America and Southeast Asia. They were selected based on their active online presence, dissemination of dengue-related content, and substantial social media followings. Interviews took place either in person or online, according to the participants' chosen languages. Each session, lasting approximately 60 minutes, was audio recorded, transcribed verbatim, and subjected to thematic analysis to identify recurring themes. RESULTS The thematic analysis led to several key findings. First, DOLs used social media to enhance public health communication, focusing on raising awareness (16/37, 43%), correcting misconceptions (17/37, 46%), and modeling preventive behaviors (8/37, 22%) for infectious diseases. They educated audiences on disease symptoms and prevention, addressed vaccine hesitancy, and shared personal practices to encourage similar actions among followers. Second, 35% (13/37) of the DOLs reported a widespread lack of public knowledge about dengue and its prevention, with even less awareness of vaccine availability. In addition, 27% (10/37) of them identified challenges due to antivaccination sentiments and misinformation, while 8% (3/37) noted obstacles from perceived inadequate government leadership in dengue prevention. In response, DOLs leveraged their social media influence to educate the public. A significant number (22/37, 59%) of the DOLs emphasized the importance of regular promotion of vector control measures as the cornerstone of dengue prevention and 68% (25/37) highlighted the critical role of vaccines, particularly among vulnerable groups. Finally, collaboration was essential for expanding DOLs' reach and credibility, with 54% (20/37) of them partnering with pharmaceutical companies, 43% (16/37) with government agencies, and 27% (10/37) with nongovernmental organizations. In these collaborations, 38% (14/37) of the DOLs emphasized the importance of adhering to ethical standards, and 57% (21/37) prioritized projects aligning with their personal values and professional standards, avoiding producing content that contradicted their beliefs or goals. CONCLUSIONS DOLs are essential in disseminating dengue prevention information. They recognize their responsibility to raise awareness about dengue vaccines and dispel related misconceptions to combat vaccine hesitancy. Unlike nonmedical social media influencers, whose content may lack medical accuracy and be driven by monetization, DOLs provide evidence-based information, enhancing their credibility. Collaborations between DOLs and health sector stakeholders, although currently limited, hold significant potential for effective dengue prevention, provided they adhere to ethical standards and are supported by credible scientific evidence.
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Affiliation(s)
- Andrew Green
- Regional Medical Affairs Vaccines, Growth and Emerging Markets, Takeda Pharmaceuticals International AG Singapore Branch, Singapore, Singapore
| | - Shishi Wu
- IQVIA Real World Solutions Asia-Pacific, Singapore, Singapore
| | - Alberta Di Pasquale
- Regional Medical Affairs Vaccines, Growth and Emerging Markets, Takeda Pharmaceuticals International AG Singapore Branch, Singapore, Singapore
| | - Tikki Pang
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
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Van NTH, Bach PC, Thuong VT, Tuyen TT, Vien TA, Thuy DTT, Quynh DT, Nghi DH, Quan PM, Xuan NM, Toan TQ, Minh PTH, Hung NH. Chemical Composition and Pesticidal Activities Against Three Vector Mosquito Species of Zanthoxylum armatum DC. Essential Oils. Chem Biodivers 2025:e202500648. [PMID: 40257289 DOI: 10.1002/cbdv.202500648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2025] [Revised: 04/12/2025] [Accepted: 04/21/2025] [Indexed: 04/22/2025]
Abstract
In this study, we investigated the extraction yield and chemical composition of essential oils from the fruit, leaf, and twig of Zanthoxylum armatum from Vietnam. The fruit essential oil (FEO) with high content, representing a chemotype, was evaluated for pesticidal activities against three mosquito species Aedes aegypti, Aedes albopictus, and Culex quinquefasciatus, according to the WHO guidelines with modifications. The results showed that the major constituents of FEO were limonene (30.50%), sabinene (15.16%), terpinen-4-ol (13.05%), and γ-terpinene (7.49%). The major constituents of leaf essential oil (LEO) were sabinene (20%), 1,8-cineole (16.97%), limonene (12.32%), and 2-undecanone (9.17%). The twig essential oil (TEO) was rich in ketones (73.84%), with the main constituents being 2-undecanone (47.33%) and 2-tridecanone (26.14%). FEO exhibited potential pesticidal activities: larvicidal activities with 24-h LC50 values ranging from 21.55 to 29.53 µg/mL inhibited the biting of A. aegypti adults with a protection time of 176.5 ± 40.20 min, and exhibited potent adulticidal activities against A. aegypti. In addition, FEO did not exhibit cytotoxicity against the normal Vero cell line. This study contributes an evidence base to support the future development and use of FEO as a promising biopesticide agent for the control of disease-transmitting mosquito species and altering synthetic pesticides.
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Affiliation(s)
- Nguyen Thi Hong Van
- Institute of Chemistry (ICH), Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
| | - Pham Cao Bach
- Institute of Chemistry (ICH), Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
| | - Vo Thanh Thuong
- Department of Pharmacy, Duy Tan University, Da Nang, Vietnam
| | - Tran Thi Tuyen
- Institute of Chemistry (ICH), Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
| | - Trinh Anh Vien
- Department of Examination and Quality Assurance of Education, Hanoi Medical University-Thanh Hoa Campus, Thanh Hoa, Vietnam
| | - Dinh Thi Thu Thuy
- Institute of Chemistry (ICH), Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
| | - Dang Thu Quynh
- Institute of Chemistry (ICH), Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
| | - Do Huu Nghi
- Institute of Chemistry (ICH), Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
| | - Pham Minh Quan
- Institute of Chemistry (ICH), Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
| | - Nguyen Mua Xuan
- Institute of Chemistry (ICH), Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
| | - Tran Quoc Toan
- Institute of Chemistry (ICH), Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
| | - Pham Thi Hong Minh
- Institute of Chemistry (ICH), Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
| | - Nguyen Huy Hung
- Department of Pharmacy, Duy Tan University, Da Nang, Vietnam
- Center for Advanced Chemistry, Institute of Research and Development, Duy Tan University, Da Nang, Vietnam
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Perez LJ, Yamaguchi J, Weiss S, Carlos C, Meyer TV, Rodgers MA, Phoompoung P, Suputtamongkol Y, Cloherty GA, Berg MG. Climate, inter-serotype competition and arboviral interactions shape dengue dynamics in Thailand. Commun Biol 2025; 8:601. [PMID: 40216923 PMCID: PMC11992266 DOI: 10.1038/s42003-025-07999-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2024] [Accepted: 03/25/2025] [Indexed: 04/14/2025] Open
Abstract
The incidence and global spread of dengue are reaching alarming levels. Thailand represents a critical disease epicenter and demands an understanding of the environmental and evolutionary pressures that sustain DENV transmission. Unlike most affected countries experiencing recurrent outbreaks of the same serotype or replacement of one serotype for another, Thailand is an ecological niche for all four serotypes. Favorable climate and mosquito vector availability maintain a landscape defined by stable, endemic circulation of genotypes, with minimal genetic variation attributed to sporadic, external introductions. This equilibrium is achieved through inter-serotype competition, characterized by reproductive fitness levels that maintain infections (Re>1) and elevated evolutionary rates ( ~ 10-4), which steadily increase the genetic diversity of each serotype. This conclusion is reinforced by the identification of numerous positively selected mutations, skewed in the direction of non-structural proteins conferring replication and transmission advantages versus those present in structural proteins evading neutralizing antibodies. Precipitous drops in DENV cases following outbreaks of Chikungunya suggest that interactions with other arboviruses also impact DENV dynamics through vector competition, replication inhibition or partial cross-protection. Thailand is a major exporter of DENV cases and novel emergent lineages gaining fitness here are likely to spread internationally. Surveillance is therefore paramount to monitor diversification trends and take measures to avoid the establishment of similar sustained, local transmission in other countries.
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Affiliation(s)
- Lester J Perez
- Infectious Disease Research, Abbott Diagnostics Division, Abbott Laboratories, Abbott Park, Lake Bluff, IL, USA.
- Abbott Pandemic Defense Coalition (APDC), Abbott Park, Lake Bluff, IL, USA.
| | - Julie Yamaguchi
- Infectious Disease Research, Abbott Diagnostics Division, Abbott Laboratories, Abbott Park, Lake Bluff, IL, USA
- Abbott Pandemic Defense Coalition (APDC), Abbott Park, Lake Bluff, IL, USA
| | - Sonja Weiss
- Infectious Disease Research, Abbott Diagnostics Division, Abbott Laboratories, Abbott Park, Lake Bluff, IL, USA
- Abbott Pandemic Defense Coalition (APDC), Abbott Park, Lake Bluff, IL, USA
| | - Christiane Carlos
- Infectious Disease Research, Abbott Diagnostics Division, Abbott Laboratories, Abbott Park, Lake Bluff, IL, USA
- Abbott Pandemic Defense Coalition (APDC), Abbott Park, Lake Bluff, IL, USA
| | - Todd V Meyer
- Infectious Disease Research, Abbott Diagnostics Division, Abbott Laboratories, Abbott Park, Lake Bluff, IL, USA
- Abbott Pandemic Defense Coalition (APDC), Abbott Park, Lake Bluff, IL, USA
| | - Mary A Rodgers
- Infectious Disease Research, Abbott Diagnostics Division, Abbott Laboratories, Abbott Park, Lake Bluff, IL, USA
- Abbott Pandemic Defense Coalition (APDC), Abbott Park, Lake Bluff, IL, USA
| | - Pakpoom Phoompoung
- Faculty of Medicine, Siriraj Hospital Mahidol University, Bangkok, Thailand
| | | | - Gavin A Cloherty
- Infectious Disease Research, Abbott Diagnostics Division, Abbott Laboratories, Abbott Park, Lake Bluff, IL, USA
- Abbott Pandemic Defense Coalition (APDC), Abbott Park, Lake Bluff, IL, USA
| | - Michael G Berg
- Infectious Disease Research, Abbott Diagnostics Division, Abbott Laboratories, Abbott Park, Lake Bluff, IL, USA
- Abbott Pandemic Defense Coalition (APDC), Abbott Park, Lake Bluff, IL, USA
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Zhang S, Wang S, Liu J. Global, regional and national trends in incidence and mortality of pertussis from 1990 to 2021 and the comparison before and during COVID-19: A modelling analysis. J Infect Public Health 2025; 18:102696. [PMID: 39954608 DOI: 10.1016/j.jiph.2025.102696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2024] [Revised: 02/04/2025] [Accepted: 02/06/2025] [Indexed: 02/17/2025] Open
Abstract
BACKGROUND Pertussis, a contagious respiratory disease, has seen a global decline in cases due to vaccination but has resurged because of waning immunity, with further impacts from the COVID-19 pandemic. This study aimed to assess the disease burden of pertussis worldwide from 1990 to 2021. METHODS Using the GBD 2021, we extracted age-standardized incidence rates (ASIR) and death rates (ASDR) of pertussis and analyzed the trends of them through calculating the estimated annual percentage change (EAPC) at global, regional and national levels from 1990 to 2021. Besides, we compared the EAPCs before and during the COVID-19 pandemic to explore the difference. Lastly, we investigated the association between age-standardized rates (ASR) and the socio-demographic index (SDI). RESULTS From 1990-2021, the global ASIR and ASDR of pertussis witnessed an annual decline of 2.57 % (95 %CI: 1.91-3.22 %) and 3.20 % (2.54-3.85 %) on average, respectively. During the COVID-19 pandemic, the ASR showed steep downward trends not only globally but also in diverse regions. Nevertheless, before the pandemic, Southern Sub-Sahara Africa witnessed upward trends in ASR, whose EAPCs were 0.85 % (0.67-1.02 %) for ASIR and 0.65 % (0.41-0.88 %) for ASDR. Additionally, a remarkable negative correlation was revealed between ASR and SDI (Regional level: r = -0.843; r = -0.885. National level: r = -0.621; r = -0.762. All P < 0.001.), corroborating with the observation that regions and countries with lower SDI bore the higher disease burden. CONCLUSIONS From 1990-2021, global burden of pertussis showed a downward trend, with significant drops during the COVID-19 pandemic. However, before the COVID-19, Southern Sub-Saharan Africa saw rising ASIR and ASDR, contrary to the majority. Besides, SDI was proved negatively correlated with ASR, indicating that low-SDI countries, especially in Sub-Saharan Africa, faced high disease burden, which highlighted the need for improving immunization, surveillance, and healthcare resource allocation to control pertussis effectively.
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Affiliation(s)
- Shimo Zhang
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, No.38, Xueyuan Road, Haidian District, Beijing 100191, China
| | - Sijia Wang
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, No.38, Xueyuan Road, Haidian District, Beijing 100191, China
| | - Jue Liu
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, No.38, Xueyuan Road, Haidian District, Beijing 100191, China; Peking University Health Science Center-Weifang Joint Research Center for Maternal and Child Health, Peking University, No.5 Yiheyuan Road, Haidian District, Beijing 100871, China; National Health Commission Key Laboratory of Reproductive Health, Peking University, No.5 Yiheyuan Road, Haidian District, Beijing 100871, China.
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7
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Almulhim M, Ghasemian A, Memariani M, Karami F, Yassen ASA, Alexiou A, Papadakis M, Batiha GES. Drug repositioning as a promising approach for the eradication of emerging and re-emerging viral agents. Mol Divers 2025:10.1007/s11030-025-11131-8. [PMID: 40100484 DOI: 10.1007/s11030-025-11131-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2024] [Accepted: 02/08/2025] [Indexed: 03/20/2025]
Abstract
The global impact of emerging and re-emerging viral agents during epidemics and pandemics leads to serious health and economic burdens. Among the major emerging or re-emerging viruses include SARS-CoV-2, Ebola virus (EBOV), Monkeypox virus (Mpox), Hepatitis viruses, Zika virus, Avian flu, Influenza virus, Chikungunya virus (CHIKV), Dengue fever virus (DENV), West Nile virus, Rhabdovirus, Sandfly fever virus, Crimean-Congo hemorrhagic fever (CCHF) virus, and Rift Valley fever virus (RVFV). A comprehensive literature search was performed to identify existing studies, clinical trials, and reviews that discuss drug repositioning strategies for the treatment of emerging and re-emerging viral infections using databases, such as PubMed, Scholar Google, Scopus, and Web of Science. By utilizing drug repositioning, pharmaceutical companies can take advantage of a cost-effective, accelerated, and effective strategy, which in turn leads to the discovery of innovative treatment options for patients. In light of antiviral drug resistance and the high costs of developing novel antivirals, drug repositioning holds great promise for more rapid substitution of approved drugs. Main repositioned drugs have included chloroquine, ivermectin, dexamethasone, Baricitinib, tocilizumab, Mab114 (Ebanga™), ZMapp (pharming), Artesunate, imiquimod, saquinavir, capmatinib, naldemedine, Trametinib, statins, celecoxib, naproxen, metformin, ruxolitinib, nitazoxanide, gemcitabine, Dorzolamide, Midodrine, Diltiazem, zinc acetate, suramin, 5-fluorouracil, quinine, minocycline, trifluoperazine, paracetamol, berbamine, Nifedipine, and chlorpromazine. This succinct review will delve into the topic of repositioned drugs that have been utilized to combat emerging and re-emerging viral pathogens.
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Affiliation(s)
- Marwa Almulhim
- Department of Internal Medicine, College of Medicine, Jouf University, Sakaka, Saudi Arabia
| | - Abdolmajid Ghasemian
- Noncommunicable Diseases Research Center, Fasa University of Medical Sciences, Fasa, Iran.
| | - Mojtaba Memariani
- Department of Mycobacteriology and Pulmonary Research, Pasteur Institute of Iran, Tehran, Iran
- Microbiology Research Center (MRC), Pasteur Institute of Iran, Tehran, Iran
| | - Farnaz Karami
- Noncommunicable Diseases Research Center, Fasa University of Medical Sciences, Fasa, Iran
| | - Asmaa S A Yassen
- Department of Mycobacteriology and Pulmonary Research, Pasteur Institute of Iran, Tehran, Iran.
- Pharmaceutical Organic Chemistry Department, Faculty of Pharmacy, Suez Canal University, Ismailia, 41522, Egypt.
| | - Athanasios Alexiou
- University Centre for Research & Development, Chandigarh University, Chandigarh-Ludhiana Highway, Mohali, Punjab, India
- Department of Science and Engineering, Novel Global Community Educational Foundation, Hebersham, NSW, 2770, Australia
| | - Marios Papadakis
- Department of Surgery II, University Hospital Witten-Herdecke, University of Witten-Herdecke, Heusnerstrasse 40, 42283, Wuppertal, Germany.
| | - Gaber El-Saber Batiha
- Department of Pharmacology and Therapeutics, Faculty of Veterinary Medicine, Damanhour University, Damanhour, 22511, AlBeheira, Egypt
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Odio CD, Yek C, Hasund CM, Man S, Ly P, Nhek S, Chea S, Lon C, Voirin C, Huy R, Leang R, Huch C, Lamirande EW, Whitehead SS, Oliveira F, Manning JE, Katzelnick LC. Immunity to Non-Dengue Flaviviruses Impacts Dengue Virus Immunoglobulin G Enzyme-Linked Immunosorbent Assay Specificity in Cambodia. J Infect Dis 2025; 231:e337-e344. [PMID: 39297691 PMCID: PMC11841641 DOI: 10.1093/infdis/jiae422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2024] [Indexed: 09/25/2024] Open
Abstract
BACKGROUND Seroprevalence studies are the standard for disease surveillance, and serology determined eligibility for the first dengue vaccine. Expanding flavivirus co-circulation and vaccination complicate testing. We evaluate the accuracy of a common dengue virus serological assay, examine immunity to non-dengue flaviviruses as a contributor to decreased performance, and assess whether alternative cut points may improve assay performance. METHODS Children (n = 770) aged 2-9 years in Kampong Speu, Cambodia were enrolled in a prospective longitudinal study, and PanBio indirect dengue virus immunoglobulin G (IgG) enzyme-linked immunosorbent assay (ELISA) was performed. Plaque reduction neutralization tests (PRNTs) using dengue viruses were performed on a subset to assess the accuracy of the IgG ELISA, and PRNTs with Zika, Japanese encephalitis, and West Nile viruses evaluated immunity to non-dengue flaviviruses. Receiver operating curve analysis identified an alternative cut point to improve IgG ELISA accuracy. RESULTS The dengue IgG ELISA had a lower specificity than previously reported (58% vs 93%-100%). Of those with false-positive IgG results, 46% had detectable neutralizing antibodies against other flaviviruses including 14% against West Nile virus. A higher IgG cut point improved the test accuracy in this population. CONCLUSIONS Physicians and public health authorities should be alert for West Nile in Cambodia. Immunity to non-dengue flaviviruses can impact dengue surveillance. CLINICAL TRIALS REGISTRATION NCT03534245.
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Affiliation(s)
- Camila D Odio
- Viral Epidemiology and Immunity Unit, Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, USA
| | - Christina Yek
- International Center of Excellence in Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Phnom Penh, Cambodia
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, USA
| | - Chloe M Hasund
- Viral Epidemiology and Immunity Unit, Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, USA
| | - Somnang Man
- International Center of Excellence in Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Phnom Penh, Cambodia
| | - Piseth Ly
- International Center of Excellence in Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Phnom Penh, Cambodia
| | - Sreynik Nhek
- International Center of Excellence in Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Phnom Penh, Cambodia
| | - Sophana Chea
- International Center of Excellence in Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Phnom Penh, Cambodia
| | - Chanthap Lon
- International Center of Excellence in Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Phnom Penh, Cambodia
| | - Charlie Voirin
- Viral Epidemiology and Immunity Unit, Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, USA
| | - Rekol Huy
- National Center for Parasitology, Entomology, and Malaria Control, Ministry of Health, Phnom Penh, Cambodia
| | - Rithea Leang
- National Center for Parasitology, Entomology, and Malaria Control, Ministry of Health, Phnom Penh, Cambodia
| | - Chea Huch
- National Center for Parasitology, Entomology, and Malaria Control, Ministry of Health, Phnom Penh, Cambodia
| | - Elaine W Lamirande
- Laboratory of Viral Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, USA
| | - Stephen S Whitehead
- Laboratory of Viral Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, USA
| | - Fabiano Oliveira
- International Center of Excellence in Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Phnom Penh, Cambodia
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, USA
| | - Jessica E Manning
- International Center of Excellence in Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Phnom Penh, Cambodia
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, USA
| | - Leah C Katzelnick
- Viral Epidemiology and Immunity Unit, Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, USA
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9
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Kothari D, Patel N, Bishoyi AK. Dengue: epidemiology, diagnosis methods, treatment options, and prevention strategies. Arch Virol 2025; 170:48. [PMID: 39915348 DOI: 10.1007/s00705-025-06235-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2024] [Accepted: 12/03/2024] [Indexed: 03/08/2025]
Abstract
Dengue is an arboviral disease caused by dengue virus, which is mostly found in tropical regions, and the number of human cases has increased dramatically since 2000, with 5.2 million cases reported in 2019, according to WHO reports, 70% of which were in Southeast Asia, the Western Pacific, and Asia. Dengue infection can result in a wide range of clinical manifestations, ranging from fever to severe dengue shock syndrome, which can be fatal, particularly in those with secondary dengue. This review of the aetiology of dengue fever examines the complex interactions between the virus and the immune system and the interaction between viral and host factors and also covers outbreaks, the severity of disease caused by different serotypes, and methods for diagnosis of dengue, such as serological tests, nucleic acid amplification tests, and ELISA assays for detecting the NS1 antigen. Current treatment options and prevention strategies, including vector control measures, environmental interventions, and insect repellents are also discussed. This review highlights the challenges involved in developing a dengue vaccine, which is complicated by the need for an efficient and balanced immune response against all genotypes of the four serotypes.
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Affiliation(s)
- Dimple Kothari
- Department of Microbiology, Faculty of Science, Marwadi University, Rajkot, Gujarat, 360003, India
| | - Niralee Patel
- Department of Microbiology, Faculty of Science, Marwadi University, Rajkot, Gujarat, 360003, India.
| | - Ashok Kumar Bishoyi
- Department of Microbiology, Faculty of Science, Marwadi University, Rajkot, Gujarat, 360003, India
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Biscayart C, Angeleri P, Bouzas MB, Mammana L, Macchia A. Prevalence of antibodies against dengue virus in the city of Buenos Aires: Results of a probabilistic population survey. PLoS Negl Trop Dis 2025; 19:e0012886. [PMID: 39965029 PMCID: PMC11856294 DOI: 10.1371/journal.pntd.0012886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2024] [Revised: 02/25/2025] [Accepted: 02/04/2025] [Indexed: 02/20/2025] Open
Abstract
OBJECTIVE Dengue is a rapidly growing global health issue. In Argentina, the disease burden is primarily based on case reports or retrospective series; however, there are no prospective probabilistic studies available. To estimate the seroprevalence of antibodies against the dengue virus (DENV) in adult residents of Buenos Aires, at the end of the 2023 season, which culminated in Argentina's largest recorded dengue outbreak, and immediately before the subsequent outbreak at the beginning of 2024. METHODS A stratified, multi-stage probabilistic population survey was conducted to ensure representativeness of the adult population of Buenos Aires, considering geographical and socio-economic diversity.The survey determined the seroprevalence rate of DENV IgG and IgM antibodies using a rapid chromatographic immunoassay. Antibody positive participants were invited for re-testing to confirm antibody result using an enzyme-linked fluorescence assay (ELFA) technique. RESULTS Out of a sampling frame of 2,998 selected households, the interviewers visited 100% of the residences. The overall response rate was 26.8%. A total of 804 participants were enrolled, representing the city's 2.38 million adult population. Weighted estimates showed a total of 193,707 people aged 18 and over have antibodies to DENV. This implies a weighted prevalence [95% CI] of 8.12% [8.08%-8.15%]. The prevalence varied across different areas of the city. In the slums, the overall prevalence was twice as high (14.7% [14.5%-14.9%]) compared to the rest of the city (7.67% [7.63%-7.70%]). CONCLUSION Seroprevalence results in adults in Buenos Aires show a moderate DENV infection rate, although still far from the thresholds usually considered for initiating a mass vaccination campaign. These results underscore the need for frequent surveys.
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Affiliation(s)
- Cristián Biscayart
- Fundación GESICA (Grupo de Estudios Sobre Investigación Clínica en Argentina), Ciudad Autónoma de Buenos Aires, Argentina
| | - Patricia Angeleri
- Fundación GESICA (Grupo de Estudios Sobre Investigación Clínica en Argentina), Ciudad Autónoma de Buenos Aires, Argentina
| | - María Belén Bouzas
- División Análisis Clínicos, Hospital “Francisco J. Muñiz”, Ciudad Autónoma de Buenos Aires, Argentina
| | - Lilia Mammana
- Unidad de Virología, Hospital “Francisco J. Muñiz”, Ciudad Autónoma de Buenos Aires, Argentina
| | - Alejandro Macchia
- Fundación GESICA (Grupo de Estudios Sobre Investigación Clínica en Argentina), Ciudad Autónoma de Buenos Aires, Argentina
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Edrees WH, Al-Shehari WA, Al-Haddad AM, Alrahabi LM, Al-Haddad OS, Al-Halani AA. Dengue fever in Yemen: a five-year review, 2020-2024. BMC Infect Dis 2025; 25:28. [PMID: 39762726 PMCID: PMC11702136 DOI: 10.1186/s12879-024-10429-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2024] [Accepted: 12/27/2024] [Indexed: 01/11/2025] Open
Abstract
BACKGROUND Dengue fever (DF) is a mosquito-borne viral infection that has recently become a burden worldwide, particularly in low-income countries, such as Yemen. There have been no epidemiological studies on DF in recent years in Yemen. Therefore, based on secondary data, this study aimed to shed light on the epidemiology of DF in Yemen between 2020 and 2024. METHODS This was a retrospective analysis using secondary data recorded between January 2020 and August 2024 in the Surveillance Center of the Ministry of Health and Population in Aden. The data was gathered in a Microsoft Excel file and descriptively analyzed. RESULTS A total of 104,562 dengue cases, aged between 1 and 80 years (SD = 24.93±17.02), were enrolled in this retrospective analysis. A higher proportion of DF cases was recorded among males (58.10%), the age group of 15-24 years (26.11%), in 2020 (30.65%), in the Taiz governorate (39.17%), and in the autumn (28.9%). The total incidence of DF was 103.09 per 10,000 individuals. Additionally, the incidence rate of DF per 10,000 individuals was significantly higher among males (118.3 cases), aged 25-34 years (91.73 cases), in 2020 (31.39 cases), and in the Shabwah governorate (176.96 cases). In general, the total fatality rate was 217 (0.21%), with a high rate among females (0.23%), aged ≥ 65 years (0.75%), in 2020 (0.37%), and the Aden governorate (0.82%). CONCLUSION These findings indicate that the rates of DF cases have increased in Yemen over the last few years. Therefore, it is critical to introduce an effective program to prevent DF and control dengue vector transmission in Yemen.
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Affiliation(s)
- Wadhah Hassan Edrees
- Medical Microbiology Department, Faculty of Applied Sciences, Hajjah University, Hajjah, Yemen.
- Medical Laboratory Department, Faculty of Medical Sciences, Al-Razi University, Sana'a, Yemen.
| | - Wadee Abdullah Al-Shehari
- Medical Microbiology Department, Faculty of Medical Sciences, Ibb University, Ibb, Ibb, Yemen
- Medical Laboratory Department, Faculty of Medical Sciences, International Malaysia University, Ibb, Yemen
| | - Ahmed Mohammed Al-Haddad
- Department of Medical Laboratories, College of Medicine and Health Sciences, Hadhramout University, Mukalla, Yemen
| | - Lutf Mohammed Alrahabi
- Medical Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Sana'a University, Sana'a, Yemen
- Dental Department, Faculty of Medical Sciences, Queen Arwa University, Sana'a, Yemen
| | - Osama Saleh Al-Haddad
- Department of Human Medicine, Faculty of Medicine and Health Sciences, Sana'a University, Sana'a, Yemen
- Department of Health Administration, Al-Manar College for Science and Technology, Hajjah, Yemen
| | - Ali Ahmed Al-Halani
- Medical Microbiology Department, Faculty of Applied Sciences, Hajjah University, Hajjah, Yemen
- Department of Health Administration, Al-Manar College for Science and Technology, Hajjah, Yemen
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Odio CD, Daag JV, Crisostomo MV, Voirin CJ, Coello Escoto A, Adams C, Dahora Hein L, Aogo RA, Mpingabo PI, Raimundi Rodriguez G, Firdous S, Abad Fernandez M, White LJ, Agrupis KA, Deen J, de Silva AM, Ylade M, Katzelnick LC. Dengue virus IgG and neutralizing antibody titers measured with standard and mature viruses are protective. Nat Commun 2025; 16:191. [PMID: 39747846 PMCID: PMC11697199 DOI: 10.1038/s41467-024-53916-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2024] [Accepted: 10/25/2024] [Indexed: 01/04/2025] Open
Abstract
The standard dengue virus (DENV) neutralization assay inconsistently predicts dengue protection. We compare how IgG ELISA, envelope domain III (EDIII), or non-structural protein 1 (NS1) binding antibodies, and titers from plaque reduction neutralization tests (PRNTs) using standard and mature viruses are associated with dengue. The ELISA measures IgG antibodies that bind to inactivated DENV1-4. The EDIII and NS1 assays measure binding antibodies, and the PRNTs measure neutralizing antibodies to each specific DENV serotype. Healthy children (n = 1206) in Cebu, Philippines were followed for 5 years. ELISA IgG≥3 was associated with reduced dengue probability relative to naïve children (3% vs. 10%, p = 0.007). Serotype-specific antibodies binding EDIII or NS1 had no association with dengue risk. Standard virus PRNT geometric mean titers (GMT) > 200 and mature GMT > 100 were associated with reduced dengue disease overall (p < 0.01). High DENV2 and DENV3 titers against either standard or mature viruses protected against the matched serotype (p < 0.01). While 43% of dengue cases had standard virus PRNT titers>100, only 2% of cases had mature virus PRNT titers>100 (p < 0.001), indicating a lower, more consistent threshold for protection. These assays may serve as correlates of protection.
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Affiliation(s)
- Camila D Odio
- Viral Epidemiology and Immunity Unit, Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, USA
| | - Jedas Veronica Daag
- Institute of Child Health and Human Development, National Institutes of Health, University of the Philippines Manila, Manila, Philippines
| | - Maria Vinna Crisostomo
- Institute of Child Health and Human Development, National Institutes of Health, University of the Philippines Manila, Manila, Philippines
| | - Charlie J Voirin
- Viral Epidemiology and Immunity Unit, Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, USA
| | - Ana Coello Escoto
- Viral Epidemiology and Immunity Unit, Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, USA
| | - Cameron Adams
- Department of Microbiology and Immunology, University of North Carolina School of Medicine, Chapel Hill, North Carolina, USA
| | - Lindsay Dahora Hein
- Department of Microbiology and Immunology, University of North Carolina School of Medicine, Chapel Hill, North Carolina, USA
| | - Rosemary A Aogo
- Viral Epidemiology and Immunity Unit, Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, USA
| | - Patrick I Mpingabo
- Viral Epidemiology and Immunity Unit, Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, USA
| | - Guillermo Raimundi Rodriguez
- Viral Epidemiology and Immunity Unit, Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, USA
| | - Saba Firdous
- Viral Epidemiology and Immunity Unit, Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, USA
| | - Maria Abad Fernandez
- Department of Microbiology and Immunology, University of North Carolina School of Medicine, Chapel Hill, North Carolina, USA
| | - Laura J White
- Department of Microbiology and Immunology, University of North Carolina School of Medicine, Chapel Hill, North Carolina, USA
| | - Kristal An Agrupis
- Institute of Child Health and Human Development, National Institutes of Health, University of the Philippines Manila, Manila, Philippines
| | - Jacqueline Deen
- Institute of Child Health and Human Development, National Institutes of Health, University of the Philippines Manila, Manila, Philippines
| | - Aravinda M de Silva
- Department of Microbiology and Immunology, University of North Carolina School of Medicine, Chapel Hill, North Carolina, USA
| | - Michelle Ylade
- Institute of Child Health and Human Development, National Institutes of Health, University of the Philippines Manila, Manila, Philippines.
| | - Leah C Katzelnick
- Viral Epidemiology and Immunity Unit, Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, USA.
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Islam MT, Kamal ASMM, Islam MM, Hossain S. Time series patterns of dengue and associated climate variables in Bangladesh and Singapore (2000-2020): a comparative study of statistical models to forecast dengue cases. INTERNATIONAL JOURNAL OF ENVIRONMENTAL HEALTH RESEARCH 2024:1-11. [PMID: 39661019 DOI: 10.1080/09603123.2024.2434206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2024] [Accepted: 11/21/2024] [Indexed: 12/12/2024]
Abstract
This study explores the effect of climate factors on dengue incidence in Bangladesh and Singapore from 2000 to 2020. Various forecasting models, including Seasonal ARIMA, Poisson regression, artificial neural networks (ANN), support vector machines (SVM), and other statistical techniques, were applied to forecast dengue trends and generate future datasets. The results showed that Bangladesh has higher mean temperatures. The Poisson regression indicated that rainfall positively correlated with dengue cases in Bangladesh, while humidity and sunshine showed negative associations. In Singapore, temperature was positively associated with dengue cases, while rainfall and humidity had inverse relationships. ARIMA models predicted Singapore would experience the highest dengue cases by 2023. Based on the Root Mean Square Error (RMSE), the TBATS model was most accurate for predicting dengue cases in Bangladesh, while both ARIMA and TBATS models performed well in Singapore. This study provides valuable insights for policymakers in Singapore and Bangladesh to develop climate-based warning systems.
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Affiliation(s)
- Md Tauhedul Islam
- Department of Disaster Science and Climate Resilience, University of Dhaka, Dhaka, Bangladesh
| | - A S M Maksud Kamal
- Department of Disaster Science and Climate Resilience, University of Dhaka, Dhaka, Bangladesh
| | - Md Momin Islam
- Department of Meteorology, University of Dhaka, Dhaka, Bangladesh
| | - Sorif Hossain
- Department of Statistics, Noakhali Science and Technology University, Noakhali, Bangladesh
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Deng J, Zhang H, Wang Y, Liu Q, Du M, Yan W, Qin C, Zhang S, Chen W, Zhou L, Liu M, Niu B, Liu J. Global, regional, and national burden of dengue infection in children and adolescents: an analysis of the Global Burden of Disease Study 2021. EClinicalMedicine 2024; 78:102943. [PMID: 39640938 PMCID: PMC11617407 DOI: 10.1016/j.eclinm.2024.102943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/07/2024] [Revised: 10/26/2024] [Accepted: 11/01/2024] [Indexed: 12/07/2024] Open
Abstract
BACKGROUND Dengue remains a global threat to public health, however, its disease burden among children and adolescents has always been poorly quantified. Therefore, we aimed to systematically estimate the global, regional, and national burden and temporal trends of dengue infection in children and adolescents from 1990 to 2021. METHODS Data on the number and rate of incidence and disability-adjusted life-years (DALYs) of dengue infection among children and adolescents under 20 years were obtained from the Global Burden of Disease Study (GBD) 2021. Estimated annual percentage changes (EAPCs) of the age-standardised incidence rate (ASIR) and age-standardised DALYs rate (ASDR), by age, sex, and different countries and regions, were calculated to quantify the temporal trends of dengue burden. The association between development levels (measured using the socio-demographic index [SDI]) and dengue burden was also determined. FINDINGS From 1990 to 2021, the global burden of dengue incidence and its associated DALYs was consistently higher in children and adolescents than in the entire population. Globally, among children and adolescents, there were 21,641,016 incident cases in 2021, an increase of 64.43% compared to 13,241,719 in 1990. The ASIR per 100,000 population increased from 587.81 in 1990 to 812.16 in 2021, with an EAPC of 1.39% (95% confidence interval [CI], 1.13%-1.65%). Besides, the number of dengue-associated DALYs among children and adolescents increased by 16.36%, from 910,458.60 in 1990 to 1,059,428.31 in 2021. The increase in DALYs was less pronounced than incidence, with the ASDR per 100,000 population increasing from 40.17 in 1990 to 41.50 in 2021, and the EAPC was only 0.67% (95% CI, 0.40%-0.95%). The incidence and DALYs burden of dengue in children and adolescents was highest in middle SDI regions, followed by low-middle SDI regions, with the lowest burden in high SDI regions. Furthermore, Tropical Latin America had an extremely high ASIR (6040.29 per 100,000 population in 2021), and Southeast Asia had an extremely high ASDR (298.20 per 100,000 population in 2021), much higher than other regions around the world. INTERPRETATION The global dengue burden in children and adolescents is high and has been increasing from 1990 to 2021, even though the distribution patterns vary across different countries and territories. This study first reported the global disease burden and temporal trends of children and adolescents, which has significant implications for policymakers and public health officials, as it underscores the need for age- and region-specific strategies to mitigate the growing global burden of dengue. FUNDING National Natural Science Foundation of China.
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Affiliation(s)
- Jie Deng
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, No.38, Xueyuan Road, Haidian District, Beijing, 100191, China
| | - Hui Zhang
- China National Committe for Terminology in Science and Technology, No. 16, Donghuangchenggen North Street, Dongcheng District, Beijing, 100717, China
| | - Yaping Wang
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, No.38, Xueyuan Road, Haidian District, Beijing, 100191, China
| | - Qiao Liu
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, No.38, Xueyuan Road, Haidian District, Beijing, 100191, China
| | - Min Du
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, No.38, Xueyuan Road, Haidian District, Beijing, 100191, China
| | - Wenxin Yan
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, No.38, Xueyuan Road, Haidian District, Beijing, 100191, China
| | - Chenyuan Qin
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, No.38, Xueyuan Road, Haidian District, Beijing, 100191, China
| | - Shimo Zhang
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, No.38, Xueyuan Road, Haidian District, Beijing, 100191, China
| | - Weiyang Chen
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, No.38, Xueyuan Road, Haidian District, Beijing, 100191, China
| | - Liyan Zhou
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, No.38, Xueyuan Road, Haidian District, Beijing, 100191, China
| | - Min Liu
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, No.38, Xueyuan Road, Haidian District, Beijing, 100191, China
- Key Laboratory of Epidemiology of Major Diseases (Peking University), Ministry of Education, No.38, Xueyuan Road, Haidian District, Beijing, 100191, China
| | - Ben Niu
- Institute of Hospital Management, Shenzhen University, 3688 Nanhai Avenue, Nanshan District, Shenzhen, 518050, China
| | - Jue Liu
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, No.38, Xueyuan Road, Haidian District, Beijing, 100191, China
- Key Laboratory of Epidemiology of Major Diseases (Peking University), Ministry of Education, No.38, Xueyuan Road, Haidian District, Beijing, 100191, China
- Institute for Global Health and Development, Peking University, No.5 Yiheyuan Road, Haidian District, Beijing, 100871, China
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Trostle JA, Robbins C, Corozo Angulo B, Acevedo A, Coloma J, Eisenberg JNS. "Dengue fever is not just urban or rural: Reframing its spatial categorization.". Soc Sci Med 2024; 362:117384. [PMID: 39393331 DOI: 10.1016/j.socscimed.2024.117384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2024] [Revised: 09/26/2024] [Accepted: 09/30/2024] [Indexed: 10/13/2024]
Abstract
Infectious diseases exploit niches that are often spatially defined as urban and/or rural. Yet spatial research on infectious diseases often fails to define "urban" and "rural" and how these contexts might influence their epidemiology. We use dengue fever, thought to be mostly an urban disease with rural foci, as a device to explore local definitions of urban and rural spaces and the impact of these spaces on dengue risk in the province of Esmeraldas, Ecuador. Ecuador, like many countries, only uses population size and administrative function to define urban and rural locales. Interviews conducted from 2019 to 2021 with 71 residents and 23 health personnel found that they identified the availability of basic services, extent of their control over their environment, and presence of underbrush and weeds (known in Ecuador as monte and maleza and conceptualized in this paper as natural disorder) as important links to their conceptions of space and dengue risk. This broader conceptualization of space articulated by local residents and professionals reflects a more sophisticated approach to characterizing dengue risk than using categories of urban and rural employed by the national census and government. Rather than this dichotomous category of space, dengue fever can be better framed for health interventions in terms of specific environmental features and assemblages of high-risk spaces. An understanding of how community members perceive risk enhances our ability to collaborate with them to develop optimal mitigation strategies.
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Affiliation(s)
- James A Trostle
- Anthropology Department, Trinity College, 300 Summit St, Hartford, CT, 06106, United states.
| | - Charlotte Robbins
- Departments of Environmental Science and Urban Studies, Trinity College, United states.
| | | | | | | | - Joseph N S Eisenberg
- School of Public Health, University of Michigan and Universidad San Francisco de Quito, Ecuador.
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Hossain MJ, Sultana N, Das A, Jui FN, Islam MK, Rahman MM, Rahman MM. Analysis of effects of meteorological variables on dengue incidence in Bangladesh using VAR and Granger causality approach. Front Public Health 2024; 12:1488742. [PMID: 39668959 PMCID: PMC11634804 DOI: 10.3389/fpubh.2024.1488742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2024] [Accepted: 11/11/2024] [Indexed: 12/14/2024] Open
Abstract
Background Dengue fever is a serious public health issue in Bangladesh, where its incidence rises with the monsoon. Meteorological variables are believed to be responsible factors among others. Therefore, this study examines the effects of meteorological variables (temperature, rainfall, and humidity) on dengue incidence in Bangladesh. While previous studies have examined the relationship between dengue and meteorological variables using single model approaches, this study employs advanced econometric techniques to capture dynamic interactions. Furthermore, in the case of Bangladesh, this type of analysis is necessary due to the fact that dengue outbreak become one of the major issues. However, the analysis related to this issue is not available. Methods For estimation purposes, the Augmented Dickey-Fuller (ADF) test, Vector Autoregressive (VAR) model, Granger causality tests, Impulse Response Function (IRF), Variance Decomposition (VDC), and Vector Error Correction Model (VECM) are employed. Results Rainfall has a significant impact on dengue incidence compared to temperature and humidity. The Granger causality test demonstrates that rainfall and dengue incidence are causally related unidirectionally. Rainfall can potentially have a short-term and long-term effect on the incidence of dengue, as per the estimates of the VECM model. Conclusions These findings will assist policymakers in Bangladesh in developing a dengue fever early warning system depending on climate change. In order to efficiently avoid the spread of dengue in Bangladesh's dengue-endemic urban areas, this study suggests societal monitoring.
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Affiliation(s)
- Md. Jamal Hossain
- Department of Applied Mathematics, Noakhali Science and Technology University, Noakhali, Bangladesh
| | - Nazia Sultana
- Department of Applied Mathematics, Noakhali Science and Technology University, Noakhali, Bangladesh
| | - Anwesha Das
- Department of Applied Mathematics, Noakhali Science and Technology University, Noakhali, Bangladesh
| | - Fariea Nazim Jui
- Department of Applied Mathematics, Noakhali Science and Technology University, Noakhali, Bangladesh
| | - Md. Kamrul Islam
- Department of Applied Mathematics, Noakhali Science and Technology University, Noakhali, Bangladesh
| | - Md. Mijanoor Rahman
- Department of Mathematics, Mawlana Bhashani Science and Technology University, Tangail, Bangladesh
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Aynekulu Mersha DG, van der Sterren I, van Leeuwen LPM, Langerak T, Hakim MS, Martina B, van Lelyveld SFL, van Gorp ECM. The role of antibody-dependent enhancement in dengue vaccination. Trop Dis Travel Med Vaccines 2024; 10:22. [PMID: 39482727 PMCID: PMC11529159 DOI: 10.1186/s40794-024-00231-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2024] [Accepted: 07/31/2024] [Indexed: 11/03/2024] Open
Abstract
Dengue is the most rapidly spreading vector-borne disease worldwide, with over half the global population at risk for an infection. Antibody-dependent enhancement (ADE) is associated with increased disease severity and may also be attributable to the deterioration of disease in vaccinated people. Two dengue vaccines are approved momentarily, with more in development. The increasing use of vaccines against dengue, combined with the development of more, makes a thorough understanding of the processes behind ADE more important than ever. Above that, due to the lack of treatment options, this method of prevention is of great importance. This review aims to explore the impact of ADE in dengue vaccinations, with the goal of enhancing potential vaccination strategies in the fight against dengue.
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Affiliation(s)
- D G Aynekulu Mersha
- Department of Viroscience, Erasmus Medical Center, Dr. Molewaterplein 40, PO Box Ee-1722, Rotterdam, 3015 GD, the Netherlands.
| | - I van der Sterren
- Department of Viroscience, Erasmus Medical Center, Dr. Molewaterplein 40, PO Box Ee-1722, Rotterdam, 3015 GD, the Netherlands
| | - L P M van Leeuwen
- Department of Viroscience, Erasmus Medical Center, Dr. Molewaterplein 40, PO Box Ee-1722, Rotterdam, 3015 GD, the Netherlands
| | - T Langerak
- Department of Viroscience, Erasmus Medical Center, Dr. Molewaterplein 40, PO Box Ee-1722, Rotterdam, 3015 GD, the Netherlands
| | - M S Hakim
- Postgraduate School of Molecular Medicine, Erasmus Medical Center, Rotterdam, the Netherlands
| | - B Martina
- Artemis Bioservices and Athenavax B.V, Delft, the Netherlands
| | - S F L van Lelyveld
- Department of internal medicine, Spaarne Gasthuis, Haarlem/Hoofddorp, the Netherlands
| | - E C M van Gorp
- Department of Viroscience, Erasmus Medical Center, Dr. Molewaterplein 40, PO Box Ee-1722, Rotterdam, 3015 GD, the Netherlands
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Chowdhury FR, Hossain Z, Parvez N, Chowdhury FUH, Bari MA, Deb SR, Ayub MI, Mallik MU, Aman S, Haque MA, Hossain MA, Alam M, Islam MK, Rahman MM. Clinical and laboratory comparison of severe (Group B and C) Dengue cases with molecular characterization from 2019 epidemics in Dhaka, Bangladesh. PLoS Negl Trop Dis 2024; 18:e0012686. [PMID: 39585911 PMCID: PMC11627391 DOI: 10.1371/journal.pntd.0012686] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 12/09/2024] [Accepted: 11/08/2024] [Indexed: 11/27/2024] Open
Abstract
Acute arboviral infections like dengue have a significant negative socioeconomic and health impact on many tropical and subtropical areas of the world. About 3.9 billion Individuals are at risk of contracting the dengue virus and Asia bears the brunt of that load. Bangladesh, like other south-east Asian countries faced a massive outbreak of dengue in 2019. This cross sectional study was done in three tertiary care centers in Dhaka, Bangladesh during this worst outbreak of dengue. The study was conducted from 1st July to 31st December, 2019 with an aim to describe the clinical and laboratory variations among severe dengue cases and to conduct a serotype survey. This might help to understand the future changes in the clinical or serological profile of the circulating dengue virus. The study enrolled 1978 participants who were grouped into group B (Patients with warning signs or risk factors who should be admitted for close observation as they approach critical phase) and C (Patients having severe plasma leakage leading to dengue shock and/or fluid accumulation with respiratory distress, severe organ impairment and severe metabolic abnormalities) according to national guidelines. Furthermore, 81 samples were serotyped using Qiagen One step RT-PCR kit (Cat. No: 210212). In addition sequencing (ABI sequencing platform) of partial C-prM gene of five DENV-3 isolates were done and analyzed (BLAST tool of NCBI) for phylogenetics (MEGA6 software package). Among the 1978 enrolled participants group B and C patients were 1580 (80%) and 398 (20%) respectively. The median (IQR) age of the patients were 26(11 to 41). Maximum proportion of the enrolled were male (72.3%) (p = 0.0002). Most common co- morbidities were hypertension (90; 4.5%) and DM (70; 3.5%). Group C patients more commonly presented with vomiting (p 0.133), diarrhea (p<0.0001) and abdominal pain (p 0.0203). The common mode of bleeding was melaena (12%). Thirteen (0.7%) patients succumbed to death, 12 of them belonged to group B who mostly presented with GI manifestations (99.9%) and melaena (12%). Only 5.6% of the cases were secondarily infected. In group C cases low hemoglobin and hematocrit was observed with high AST (p 0.004, 0.006 and 0.0016 respectively). Fluid requirement was also more in the same group (p<0.0001). Group B patients had a higher platelet requirement (p = 0.0070). Twelve patients (0.7%) required ICU. The management profile of these cases are showcased here which highlights minimal use of antibiotics and no application of steroids, which abides by the current national protocol. Furthermore, 81 samples from enrolled participants were serotyped and majority (79%) yielded DENV-3, followed by DENV 2 & 3 co-infection (13.6%) and DENV-2 alone (7.4%). Following phylogenetic analysis DENV-3 and DENV2 were deemed to be of genotype I and cosmopolitan variety respectively. This study presents the first instance of heterogeneous co-infection with several serotypes since 2000 in Bangladesh. It also gives an overview of serotype prevalence, management evaluation and clinical results that promises to navigate future control planning.
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Affiliation(s)
- Fazle Rabbi Chowdhury
- Department of Internal Medicine, Bangabandhu Sheikh Mujib Medical University, Dhaka, Bangladesh
- Department of Tropical Medicine, Mahidol-Oxford Tropical Medicine Research Unit (MORU), Bangkok, Thailand
| | - Zazeba Hossain
- Department of Internal Medicine, Bangabandhu Sheikh Mujib Medical University, Dhaka, Bangladesh
| | - Nahid Parvez
- Department of Genetic Engineering and Biotechnology, Dhaka University, Dhaka, Bangladesh
| | | | - Mohammad Anwarul Bari
- Department of Medicine, Sir Salimullah Medical College and Mitford Hospital, Dhaka, Bangladesh
| | - Sudip Ranjan Deb
- Department of Medicine, Mugda Medical College and Hospital, Dhaka, Bangladesh
| | - Mustak Ibn Ayub
- Department of Genetic Engineering and Biotechnology, Dhaka University, Dhaka, Bangladesh
| | - Md Uzzwal Mallik
- Department of Medicine, Dhaka Medical College and Hospital, Dhaka, Bangladesh
| | - Sakib Aman
- Department of Medicine, Dhaka Medical College and Hospital, Dhaka, Bangladesh
| | - Mohammad Ahsanul Haque
- Department of Medicine, Sir Salimullah Medical College and Mitford Hospital, Dhaka, Bangladesh
| | - Md Arman Hossain
- Department of Medicine, Dhaka Medical College and Hospital, Dhaka, Bangladesh
| | - Murada Alam
- Department of Medicine, Sir Salimullah Medical College and Mitford Hospital, Dhaka, Bangladesh
| | | | - Md Mujibur Rahman
- Department of Medicine, Dhaka Medical College and Hospital, Dhaka, Bangladesh
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Lee SY, Shih HI, Lo WC, Lu TH, Chien YW. Discrepancies in dengue burden estimates: a comparative analysis of reported cases and global burden of disease study, 2010-2019. J Travel Med 2024; 31:taae069. [PMID: 38696416 PMCID: PMC11149719 DOI: 10.1093/jtm/taae069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2024] [Revised: 04/22/2024] [Accepted: 04/30/2024] [Indexed: 05/04/2024]
Abstract
BACKGROUND Dengue is a significant mosquito-borne disease. Several studies have utilized estimates from the Global Burden of Disease (GBD) study to assess the global, regional or national burden of dengue over time. However, our recent investigation suggests that GBD's estimates for dengue cases in Taiwan are unrealistically high. The current study extends the scope to compare reported dengue cases with GBD estimates across 30 high-burden countries and territories, aiming to assess the accuracy and interpretability of the GBD's dengue estimates. METHODS Data for this study were sourced from the GBD 2019 study and various national and international databases documenting reported dengue cases. The analysis targeted the top 30 countries and territories with the highest 10-year average of reported cases from 2010 to 2019. Discrepancies were quantified by computing absolute differences and ratios between the 10-year average of reported cases and GBD estimates. Coefficients of variation (CV) and estimated annual percentage changes (EAPCs) were calculated to assess variations and trends in the two data sources. RESULTS Significant discrepancies were noted between reported data and GBD estimates in the number of dengue cases, incidence rates, and EAPCs. GBD estimates were substantially higher than reported cases for many entities, with the most notable differences found in China (570.0-fold), India (303.0-fold), Bangladesh (115.4-fold), Taiwan (85.5-fold) and Indonesia (23.2-fold). Furthermore, the GBD's estimates did not accurately reflect the extensive yearly fluctuations in dengue outbreaks, particularly in non-endemic regions such as Taiwan, China and Argentina, as evidenced by high CVs. CONCLUSIONS This study reveals substantial discrepancies between GBD estimates and reported dengue cases, underscoring the imperative for comprehensive analysis in areas with pronounced disparities. The failure of GBD estimates to represent the considerable annual fluctuations in dengue outbreaks highlights the critical need for improvement in disease burden estimation methodologies for dengue.
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Affiliation(s)
- Sin Yee Lee
- Department of Public Health, College of Medicine, National Cheng Kung University, No. 1, University Road, Tainan 701, Taiwan
| | - Hsin-I Shih
- Department of Emergency Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, No. 138, Sheng Li Road, Tainan 704, Taiwan
- School of Medicine, College of Medicine, National Cheng Kung University, No. 1, University Road, Tainan 701, Taiwan
| | - Wei-Cheng Lo
- Master Program in Applied Epidemiology, College of Public Health, Taipei Medical University, No. 301, Yuantong Road, Zhonghe District, New Taipei City 235, Taiwan
| | - Tsung-Hsueh Lu
- Department of Public Health, College of Medicine, National Cheng Kung University, No. 1, University Road, Tainan 701, Taiwan
| | - Yu-Wen Chien
- Department of Public Health, College of Medicine, National Cheng Kung University, No. 1, University Road, Tainan 701, Taiwan
- Department of Occupational and Environmental Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, No. 138, Sheng Li Road, Tainan 704, Taiwan
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Marczell K, García E, Roiz J, Sachdev R, Towle P, Shen J, Sruamsiri R, da Silva BM, Hanley R. The macroeconomic impact of a dengue outbreak: Case studies from Thailand and Brazil. PLoS Negl Trop Dis 2024; 18:e0012201. [PMID: 38829895 PMCID: PMC11175482 DOI: 10.1371/journal.pntd.0012201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 06/13/2024] [Accepted: 05/07/2024] [Indexed: 06/05/2024] Open
Abstract
BACKGROUND Dengue is spreading in (sub)tropical areas, and half of the global population is at risk. The macroeconomic impact of dengue extends beyond healthcare costs. This study evaluated the impact of dengue on gross domestic product (GDP) based on approaches tailored to two dengue-endemic countries, Thailand and Brazil, from the tourism and workforce perspectives, respectively. FINDINGS Because the tourism industry is a critical economic sector for Thailand, lost tourism revenues were estimated to analyze the impact of a dengue outbreak. An input-output model estimated that the direct effects (on international tourism) and indirect effects (on suppliers) of dengue on tourism reduced overall GDP by 1.43 billion US dollars (USD) (0.26%) in the outbreak year 2019. The induced effect (reduced employee income/spending) reduced Thailand's GDP by 375 million USD (0.07%). Overall, lost tourism revenues reduced Thailand's GDP by an estimated 1.81 billion USD (0.33%) in 2019 (3% of annual tourism revenue). An inoperability input-output model was used to analyze the effect of workforce absenteeism on GDP due to a dengue outbreak in Brazil. This model calculates the number of lost workdays associated with ambulatory and hospitalized dengue. Input was collected from state-level epidemiological and economic data for 2019. An estimated 22.4 million workdays were lost in the employed population; 39% associated with the informal sector. Lost workdays due to dengue reduced Brazil's GDP by 876 million USD (0.05%). CONCLUSIONS The economic costs of dengue outbreaks far surpass the direct medical costs. Dengue reduces overall GDP and inflicts national economic losses. With a high proportion of the population lacking formal employment in both countries and low income being a barrier to seeking care, dengue also poses an equity challenge. A combination of public health measures, like vector control and vaccination, against dengue is recommended to mitigate the broader economic impact of dengue.
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Affiliation(s)
| | | | | | | | - Philip Towle
- Takeda Pharmaceuticals International AG, Singapore
| | - Jing Shen
- Takeda International AG, Zürich, Switzerland
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21
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Ou G, Liu J, Zou R, Gu Y, Niu S, Yin J, Yuan J, Qu Z, Yang Y, Liu Y. The dynamic molecular characteristics of neutrophils are associated with disease progression in dengue patients. J Med Virol 2024; 96:e29729. [PMID: 38860590 DOI: 10.1002/jmv.29729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2024] [Revised: 05/26/2024] [Accepted: 06/01/2024] [Indexed: 06/12/2024]
Abstract
Dengue, the most prevalent mosquito-borne disease worldwide, poses a significant health burden. This study integrates clinical data and transcriptomic datasets from different phases of dengue to investigate distinctive and shared cellular and molecular features. Clinical data from 29 dengue patients were collected and analyzed alongside a public transcriptomic data set (GSE28405) to perform differential gene expression analysis, functional enrichment, immune landscape assessment, and development of machine learning model. Neutropenia was observed in 54.79% of dengue patients, particularly during the defervescence phase (65.79%) in clinical cohorts. Bioinformatics analyses corroborated a significant reduction in neutrophil immune infiltration in dengue patients. Receiver operating characteristic curve analysis demonstrated that dynamic changes in neutrophil infiltration levels could predict disease progression, especially during the defervescence phase, with the area under the curve of 0.96. Three neutrophil-associated biomarkers-DHRS12, Transforming growth factor alpha, and ZDHHC19-were identified as promising for diagnosing and predicting dengue progression. In addition, the activation of neutrophil extracellular traps was significantly enhanced and linked to FcγR-mediated signaling pathways and Toll-like receptor signaling pathways. Neutrophil activation and depletion play a critical role in dengue's immune response. The identified biomarkers and their associated pathways offer potential for improved diagnosis and understanding of dengue pathogenesis and progression.
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Affiliation(s)
- Guanyong Ou
- Shenzhen Key Laboratory of Pathogen and Immunity, National Clinical Research Center for Infectious Disease, State Key Discipline of Infectious Disease, The Third People's Hospital of Shenzhen, Second Hospital Affiliated to Southern University of Science and Technology, Shenzhen, China
- School of Medicine, Southern University of Science and Technology, Shenzhen, China
| | - Jiexiang Liu
- Shenzhen Clinical Medical College, Guangzhou University of Chinese Medicine, Shenzhen, China
| | - Rongrong Zou
- Shenzhen Key Laboratory of Pathogen and Immunity, National Clinical Research Center for Infectious Disease, State Key Discipline of Infectious Disease, The Third People's Hospital of Shenzhen, Second Hospital Affiliated to Southern University of Science and Technology, Shenzhen, China
| | - Yuchen Gu
- Shenzhen Key Laboratory of Pathogen and Immunity, National Clinical Research Center for Infectious Disease, State Key Discipline of Infectious Disease, The Third People's Hospital of Shenzhen, Second Hospital Affiliated to Southern University of Science and Technology, Shenzhen, China
- School of Medicine, Southern University of Science and Technology, Shenzhen, China
| | - Shiyu Niu
- Shenzhen Key Laboratory of Pathogen and Immunity, National Clinical Research Center for Infectious Disease, State Key Discipline of Infectious Disease, The Third People's Hospital of Shenzhen, Second Hospital Affiliated to Southern University of Science and Technology, Shenzhen, China
- School of Medicine, Southern University of Science and Technology, Shenzhen, China
| | - Juzhen Yin
- Shenzhen Key Laboratory of Pathogen and Immunity, National Clinical Research Center for Infectious Disease, State Key Discipline of Infectious Disease, The Third People's Hospital of Shenzhen, Second Hospital Affiliated to Southern University of Science and Technology, Shenzhen, China
- School of Medicine, Southern University of Science and Technology, Shenzhen, China
| | - Jing Yuan
- Shenzhen Key Laboratory of Pathogen and Immunity, National Clinical Research Center for Infectious Disease, State Key Discipline of Infectious Disease, The Third People's Hospital of Shenzhen, Second Hospital Affiliated to Southern University of Science and Technology, Shenzhen, China
| | - Zhijun Qu
- Longgang Central Hospital of Shenzhen, Guangdong, China
| | - Yang Yang
- Shenzhen Key Laboratory of Pathogen and Immunity, National Clinical Research Center for Infectious Disease, State Key Discipline of Infectious Disease, The Third People's Hospital of Shenzhen, Second Hospital Affiliated to Southern University of Science and Technology, Shenzhen, China
| | - Yingxia Liu
- Shenzhen Key Laboratory of Pathogen and Immunity, National Clinical Research Center for Infectious Disease, State Key Discipline of Infectious Disease, The Third People's Hospital of Shenzhen, Second Hospital Affiliated to Southern University of Science and Technology, Shenzhen, China
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Ting R, Dickens BL, Hanley R, Cook AR, Ismail E. The epidemiologic and economic burden of dengue in Singapore: A systematic review. PLoS Negl Trop Dis 2024; 18:e0012240. [PMID: 38857260 PMCID: PMC11192419 DOI: 10.1371/journal.pntd.0012240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 06/21/2024] [Accepted: 05/22/2024] [Indexed: 06/12/2024] Open
Abstract
BACKGROUND Despite its well-regarded vector control program, Singapore remains susceptible to dengue epidemics. To assist evaluation of dengue interventions, we aimed to synthesize current data on the epidemiologic and economic burden of dengue in Singapore. METHODOLOGY We used multiple databases (PubMed, Embase, Cochrane, international/national repositories, surveillance) to search for published and gray literature (2000-2022). We included observational and cost studies, and two interventional studies, reporting Singapore-specific data on our co-primary outcomes, dengue incidence and dengue-related costs. Quality was assessed using the Newcastle-Ottawa Scale and an adapted cost-of-illness evaluation checklist. We performed a narrative synthesis and grouped studies according to reported outcomes and available stratified analyses. FINDINGS In total, 333 reports (330 epidemiological, 3 economic) were included. Most published epidemiological studies (89%) and all economic studies were of good quality. All gray literature reports were from the Ministry of Health or National Environment Agency. Based predominantly on surveillance data, Singapore experienced multiple outbreaks in 2000-2021, attaining peak incidence rate in 2020 (621.1 cases/100,000 person-years). Stratified analyses revealed the highest incidence rates in DENV-2 and DENV-3 serotypes and the 15-44 age group. Among dengue cases, the risk of hospitalization has been highest in the ≥45-year-old age groups while the risks of dengue hemorrhagic fever and death have generally been low (both <1%) for the last decade. Our search yielded limited data on deaths by age, severity, and infection type (primary, secondary, post-secondary). Seroprevalence (dengue immunoglobulin G) increases with age but has remained <50% in the general population. Comprising 21-63% indirect costs, dengue-related total costs were higher in 2010-2020 (SGD 148 million) versus the preceding decade (SGD 58-110 million). CONCLUSION Despite abundant passive surveillance data, more stratified and up-to-date data on the epidemiologic and economic burden of dengue are warranted in Singapore to continuously assess prevention and management strategies.
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Affiliation(s)
- Rita Ting
- Takeda Malaysia Sdn Bhd, Selangor, Malaysia
| | - Borame L. Dickens
- Saw Swee Hock School of Public Health, National University of Singapore and National University Health System, Singapore, Singapore
| | - Riona Hanley
- Takeda Pharmaceuticals International AG, Zurich, Switzerland
| | - Alex R. Cook
- Saw Swee Hock School of Public Health, National University of Singapore and National University Health System, Singapore, Singapore
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Machange JJ, Maasayi MS, Mundi J, Moore J, Muganga JB, Odufuwa OG, Moore SJ, Tenywa FC. Comparison of the Trapping Efficacy of Locally Modified Gravid Aedes Trap and Autocidal Gravid Ovitrap for the Monitoring and Surveillance of Aedes aegypti Mosquitoes in Tanzania. INSECTS 2024; 15:401. [PMID: 38921116 PMCID: PMC11204168 DOI: 10.3390/insects15060401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2024] [Revised: 05/08/2024] [Accepted: 05/24/2024] [Indexed: 06/27/2024]
Abstract
The study assessed the trapping efficacy of locally modified (1) Gravid Aedes Trap (GAT) lined with insecticide-treated net (ITN) as a killing agent and (2) Autocidal Gravid Ovitrap (AGO) with sticky board in the semi-field system (SFS) and field setting. Fully balanced Latin square experiments were conducted to compare GAT lined with ITN vs. AGO, both with either yeast or grass infusion. Biogent-Sentinel (BGS) with BG-Lure and no CO2 was used as a standard trap for Aedes mosquitoes. In the SFS, GAT outperformed AGO in collecting both nulliparous (65% vs. 49%, OR = 2.22, [95% CI: 1.89-2.60], p < 0.001) and gravid mosquitoes (73% vs. 64%, OR = 1.67, [95% CI: 1.41-1.97], p < 0.001). Similar differences were observed in the field. Yeast and grass infusion did not significantly differ in trapping gravid mosquitoes (OR = 0.91, [95% CI: 0.77-1.07], p = 0.250). The use of ITN improved mosquito recapture from 11% to 70% in the SFS. The same trend was observed in the field. Yeast was chosen for further evaluation in the optimized GAT due to its convenience and bifenthrin net for its resistance management properties. Mosquito density was collected when using 4× GATs relative to BGS-captured gravid mosquitoes 64 vs. 58 (IRR = 0.82, [95% CI: 0.35-1.95], p = 0.658) and showed no density dependence. Deployment of multiple yeast-baited GAT lined with bifenthrin net is cost-effective (single GAT < $8) compared to other traps such as BGS ($160).
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Affiliation(s)
- Jane Johnson Machange
- School of Life Sciences and Bio-Engineering, The Nelson Mandela African Institution of Science and Technology (NM-AIST), Tengeru P.O. Box 447, Tanzania; (M.S.M.); (S.J.M.)
- Vector Control Product Testing Unit, Environmental Health and Ecological Science Department, Ifakara Health Institute, Bagamoyo P.O. Box 74, Tanzania; (J.M.); (J.M.); (J.B.M.); (O.G.O.); (F.C.T.)
| | - Masudi Suleiman Maasayi
- School of Life Sciences and Bio-Engineering, The Nelson Mandela African Institution of Science and Technology (NM-AIST), Tengeru P.O. Box 447, Tanzania; (M.S.M.); (S.J.M.)
- Vector Control Product Testing Unit, Environmental Health and Ecological Science Department, Ifakara Health Institute, Bagamoyo P.O. Box 74, Tanzania; (J.M.); (J.M.); (J.B.M.); (O.G.O.); (F.C.T.)
| | - John Mundi
- Vector Control Product Testing Unit, Environmental Health and Ecological Science Department, Ifakara Health Institute, Bagamoyo P.O. Box 74, Tanzania; (J.M.); (J.M.); (J.B.M.); (O.G.O.); (F.C.T.)
| | - Jason Moore
- Vector Control Product Testing Unit, Environmental Health and Ecological Science Department, Ifakara Health Institute, Bagamoyo P.O. Box 74, Tanzania; (J.M.); (J.M.); (J.B.M.); (O.G.O.); (F.C.T.)
- Vector Biology Unit, Department of Epidemiology and Public Health, Swiss Tropical and Public Health Institute, Kreuzstrasse 2, 4123 Allschwil, Switzerland
- Faculty of Science, University of Basel, Petersplatz 1, 4001 Basel, Switzerland
| | - Joseph Barnabas Muganga
- Vector Control Product Testing Unit, Environmental Health and Ecological Science Department, Ifakara Health Institute, Bagamoyo P.O. Box 74, Tanzania; (J.M.); (J.M.); (J.B.M.); (O.G.O.); (F.C.T.)
| | - Olukayode G. Odufuwa
- Vector Control Product Testing Unit, Environmental Health and Ecological Science Department, Ifakara Health Institute, Bagamoyo P.O. Box 74, Tanzania; (J.M.); (J.M.); (J.B.M.); (O.G.O.); (F.C.T.)
- Vector Biology Unit, Department of Epidemiology and Public Health, Swiss Tropical and Public Health Institute, Kreuzstrasse 2, 4123 Allschwil, Switzerland
- Faculty of Science, University of Basel, Petersplatz 1, 4001 Basel, Switzerland
- MRC International Statistics and Epidemiology Group, London School of Hygiene and Tropical Medicine, Keppel Street, London WC1E 7HT, UK
| | - Sarah J. Moore
- School of Life Sciences and Bio-Engineering, The Nelson Mandela African Institution of Science and Technology (NM-AIST), Tengeru P.O. Box 447, Tanzania; (M.S.M.); (S.J.M.)
- Vector Control Product Testing Unit, Environmental Health and Ecological Science Department, Ifakara Health Institute, Bagamoyo P.O. Box 74, Tanzania; (J.M.); (J.M.); (J.B.M.); (O.G.O.); (F.C.T.)
- Vector Biology Unit, Department of Epidemiology and Public Health, Swiss Tropical and Public Health Institute, Kreuzstrasse 2, 4123 Allschwil, Switzerland
- Faculty of Science, University of Basel, Petersplatz 1, 4001 Basel, Switzerland
| | - Frank Chelestino Tenywa
- Vector Control Product Testing Unit, Environmental Health and Ecological Science Department, Ifakara Health Institute, Bagamoyo P.O. Box 74, Tanzania; (J.M.); (J.M.); (J.B.M.); (O.G.O.); (F.C.T.)
- Vector Biology Unit, Department of Epidemiology and Public Health, Swiss Tropical and Public Health Institute, Kreuzstrasse 2, 4123 Allschwil, Switzerland
- Faculty of Science, University of Basel, Petersplatz 1, 4001 Basel, Switzerland
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Zhang Y, Wang D, Shi W, Zhou J, Xiang Y, Guan Y, Kong X, Liang W, Hu Y. Resistance to pyrethroids and the relationship between adult resistance and knockdown resistance (kdr) mutations in Aedes albopictus in dengue surveillance areas of Guizhou Province, China. Sci Rep 2024; 14:12216. [PMID: 38806622 PMCID: PMC11133427 DOI: 10.1038/s41598-024-63138-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Accepted: 05/24/2024] [Indexed: 05/30/2024] Open
Abstract
The Ae. albopictus mosquito has gained global attention due to its ability to transmit viruses, including the dengue and zika. Mosquito control is the only effective way to manage dengue fever, as no effective treatments or vaccines are available. Insecticides are highly effective in controlling mosquito densities, which reduces the chances of virus transmission. However, Ae. albopictus has developed resistance to pyrethroids in several provinces in China. Pyrethroids target the voltage-gated sodium channel gene (VGSC), and mutations in this gene may result in knockdown resistance (kdr). Correlation studies between resistance and mutations can assist viruses in managing Ae. albopictus, which has not been studied in Guizhou province. Nine field populations of Ae. albopictus at the larval stage were collected from Guizhou Province in 2022 and reared to F1 to F2 generations. Resistance bioassays were conducted against permethrin, beta-cypermethrin, and deltamethrin for both larvae and adults of Ae. albopictus. Kdr mutations were characterized by PCR and sequencing. Additionally, the correlation between the kdr allele and pyrethroid resistance was analyzed. All nine populations of Ae. albopictus larvae and adults were found to be resistant to three pyrethroid insecticides. One kdr mutant allele at codon 1016, one at 1532 and three at 1534 were identified with frequencies of 13.86% (V1016G), 0.53% (I1532T), 58.02% (F1534S), 11.69% (F1534C), 0.06% (F1534L) and 0.99% (F1534P), respectively. Both V1016G and F1534S mutation mosquitoes were found in all populations. The kdr mutation F1534S was positively correlated with three pyrethroid resistance phenotypes (OR > 1, P < 0.05), V1016G with deltamethrin and beta-cypermethrin resistance (OR > 1, P < 0.05) and F1534C only with beta-cypermethrin resistance (OR > 1, P < 0.05). Current susceptibility status of wild populations of Ae. albopictus to insecticides and a higher frequency of kdr mutations from dengue-monitored areas in Guizhou Province are reported in this paper. Outcomes of this study can serve as data support for further research and development of effective insecticidal interventions against Ae. albopictus populations in Guizhou Province.
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Affiliation(s)
- Yan Zhang
- Department of Vector Surveillance, Experimental Center, Guizhou Center for Disease Control and Prevention, Guiyang, 550004, Guizhou, China
- School of Public Health, the Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, 550025, Guizhou, China
| | - Dan Wang
- Department of Vector Surveillance, Experimental Center, Guizhou Center for Disease Control and Prevention, Guiyang, 550004, Guizhou, China
| | - Weifang Shi
- Department of Vector Surveillance, Experimental Center, Guizhou Center for Disease Control and Prevention, Guiyang, 550004, Guizhou, China
| | - Jingzhu Zhou
- Department of Vector Surveillance, Experimental Center, Guizhou Center for Disease Control and Prevention, Guiyang, 550004, Guizhou, China
| | - Yulong Xiang
- School of Public Health, the Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, 550025, Guizhou, China
| | - Yuwei Guan
- School of Public Health, the Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, 550025, Guizhou, China
| | - Xuexue Kong
- School of Public Health, the Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, 550025, Guizhou, China
| | - Wenqin Liang
- Department of Vector Surveillance, Experimental Center, Guizhou Center for Disease Control and Prevention, Guiyang, 550004, Guizhou, China.
- School of Public Health, the Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, 550025, Guizhou, China.
| | - Yong Hu
- School of Public Health, the Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, 550025, Guizhou, China.
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Alvarez A, Maillard O, Diarra YM, Bertolotti A, Gérardin P. Hepatitis and secondary dengue infection in Reunion island. Travel Med Infect Dis 2024; 59:102717. [PMID: 38552728 DOI: 10.1016/j.tmaid.2024.102717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2024] [Accepted: 03/26/2024] [Indexed: 04/04/2024]
Affiliation(s)
- Antoine Alvarez
- Clinical Investigation Center, INSERM CIC 1410, CHU Reunion, Saint-Pierre, 97410, Reunion, France.
| | - Olivier Maillard
- Clinical Investigation Center, INSERM CIC 1410, CHU Reunion, Saint-Pierre, 97410, Reunion, France
| | - Yves-Marie Diarra
- Clinical Investigation Center, INSERM CIC 1410, CHU Reunion, Saint-Pierre, 97410, Reunion, France
| | - Antoine Bertolotti
- Clinical Investigation Center, INSERM CIC 1410, CHU Reunion, Saint-Pierre, 97410, Reunion, France
| | - Patrick Gérardin
- Clinical Investigation Center, INSERM CIC 1410, CHU Reunion, Saint-Pierre, 97410, Reunion, France
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Frumence E, Wilkinson DA, Klitting R, Vincent M, Mnemosyme N, Grard G, Traversier N, Li-Pat-Yuen G, Heaugwane D, Souply L, Giry C, Paty MC, Collet L, Local Laboratory Network, Gérardin P, Thouillot F, De Lamballerie X, Jaffar-Bandjee MC. Dynamics of emergence and genetic diversity of dengue virus in Reunion Island from 2012 to 2022. PLoS Negl Trop Dis 2024; 18:e0012184. [PMID: 38768248 PMCID: PMC11142707 DOI: 10.1371/journal.pntd.0012184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 05/31/2024] [Accepted: 05/01/2024] [Indexed: 05/22/2024] Open
Abstract
BACKGROUND Dengue is a major public health concern in Reunion Island, marked by recurrent epidemics, including successive outbreaks of dengue virus serotypes 1 and 2 (DENV1 and DENV2) with over 70,000 cases confirmed since 2017. METHODOLOGY/PRINCIPAL FINDINGS In this study, we used Oxford Nanopore NGS technology for sequencing virologically-confirmed samples and clinical isolates collected between 2012 and 2022 to investigate the molecular epidemiology and evolution of DENV in Reunion Island. Here, we generated and analyzed a total of 499 DENV1, 360 DENV2, and 18 DENV3 sequences. By phylogenetic analysis, we show that different genotypes and variants of DENV have circulated in the past decade that likely originated from Seychelles, Mayotte and Southeast Asia and highly affected areas in Asia and Africa. CONCLUSIONS/SIGNIFICANCE DENV sequences from Reunion Island exhibit a high genetic diversity which suggests regular introductions of new viral lineages from various Indian Ocean islands. The insights from our phylogenetic analysis may inform local health authorities about the endemicity of DENV variants circulating in Reunion Island and may improve dengue management and surveillance. This work emphasizes the importance of strong local coordination and collaboration to inform public health stakeholders in Reunion Island, neighboring areas, and mainland France.
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Affiliation(s)
- Etienne Frumence
- Centre National de Référence Arbovirus Associé, CHU de la Réunion Site Nord, Saint-Denis, Réunion, France
- Laboratoire de microbiologie, CHU de la Réunion-Site Nord, Saint-Denis, Réunion, France
| | - David A. Wilkinson
- UMR ASTRE, CIRAD, INRAE, Université de Montpellier, Plateforme technologique CYROI, Sainte-Clotilde, Réunion, France
| | - Raphaelle Klitting
- Unité des Virus Émergents (UVE), Aix-Marseille Univ, IRD 190, INSERM 1207, Marseille, France
- CNR des Arbovirus, Marseille, France
| | | | - Nicolas Mnemosyme
- Laboratoire de microbiologie, CHU de la Réunion-Site Nord, Saint-Denis, Réunion, France
| | | | - Nicolas Traversier
- Centre National de Référence Arbovirus Associé, CHU de la Réunion Site Nord, Saint-Denis, Réunion, France
- Laboratoire de microbiologie, CHU de la Réunion-Site Nord, Saint-Denis, Réunion, France
| | - Ghislaine Li-Pat-Yuen
- Centre National de Référence Arbovirus Associé, CHU de la Réunion Site Nord, Saint-Denis, Réunion, France
- Laboratoire de microbiologie, CHU de la Réunion-Site Nord, Saint-Denis, Réunion, France
| | - Diana Heaugwane
- Laboratoire de microbiologie, CHU de la Réunion-Site Nord, Saint-Denis, Réunion, France
| | - Laurent Souply
- Laboratoire de microbiologie, CHU de la Réunion-Site Nord, Saint-Denis, Réunion, France
| | - Claude Giry
- Centre National de Référence Arbovirus Associé, CHU de la Réunion Site Nord, Saint-Denis, Réunion, France
- Laboratoire de microbiologie, CHU de la Réunion-Site Nord, Saint-Denis, Réunion, France
| | | | | | | | - Patrick Gérardin
- INSERM CIC 1410, CHU de la Réunion, Saint-Pierre, Réunion, France
| | | | - Xavier De Lamballerie
- Unité des Virus Émergents (UVE), Aix-Marseille Univ, IRD 190, INSERM 1207, Marseille, France
- CNR des Arbovirus, Marseille, France
| | - Marie-Christine Jaffar-Bandjee
- Centre National de Référence Arbovirus Associé, CHU de la Réunion Site Nord, Saint-Denis, Réunion, France
- Laboratoire de microbiologie, CHU de la Réunion-Site Nord, Saint-Denis, Réunion, France
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Katzelnick L, Odio C, Daag J, Crisostomo MV, Voirin C, Escoto AC, Adams C, Hein LD, Aogo R, Mpingabo P, Rodriguez GR, Firdous S, Fernandez MA, White L, Agrupis KA, Deen J, de Silva A, Ylade M. Dengue virus IgG and serotype-specific neutralizing antibody titers measured with standard and mature viruses are associated with protection. RESEARCH SQUARE 2024:rs.3.rs-4145863. [PMID: 38659845 PMCID: PMC11042401 DOI: 10.21203/rs.3.rs-4145863/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
Recent work demonstrates the limitations of the standard dengue virus (DENV) neutralization assay to predict protection against dengue. We perform studies to compare how a commercial IgG ELISA, envelope domain III (EDIII) or non-structural protein 1 (NS1) binding antibodies, and titers from plaque reduction neutralization tests (PRNTs) using reference standard and clinical mature viruses are associated with dengue disease. Healthy children (n = 1,206) in Cebu, Philippines were followed for 5 years. High ELISA values (≥3) were associated with reduced dengue probability relative to naïve children (3% vs. 10%, p = 0.008), but antibody binding EDIII or NS1 from each serotype had no association. High standard and mature geometric mean PRNT titers were associated with reduced dengue disease overall (p < 0.01), and high DENV2 and DENV3 titers in both assays provided protection against the matched serotype (p < 0.02). However, while 52% of dengue cases had standard virus PRNT titers > 100, only 2% of cases had mature virus PRNT titers > 100 (p < 0.001), indicating a lower, more consistent threshold for protection. Each assay may be useful for different purposes as correlates of protection in population and vaccine trials.
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Affiliation(s)
- Leah Katzelnick
- Viral Epidemiology and Immunity Unit, Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health
| | - Camila Odio
- Viral Epidemiology and Immunity Unit, Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health
| | - Jedas Daag
- Institute of Child Health and Human Development, National Institutes of Health, University of the Philippines Manila, Manila, Philippines
| | - Maria Vinna Crisostomo
- Institute of Child Health and Human Development, National Institutes of Health, University of the Philippines Manila, Manila, Philippines
| | - Charlie Voirin
- Viral Epidemiology and Immunity Unit, Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health
| | - Ana Coello Escoto
- Viral Epidemiology and Immunity Unit, Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health
| | | | - Lindsay Dahora Hein
- Department of Microbiology and Immunology, University of North Carolina School of Medicine, Chapel Hill
| | - Rosemary Aogo
- Viral Epidemiology and Immunity Unit, Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health
| | - Patrick Mpingabo
- Viral Epidemiology and Immunity Unit, Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health
| | - Guillermo Raimundi Rodriguez
- Viral Epidemiology and Immunity Unit, Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health
| | - Saba Firdous
- National Institute of Allergy and Infectious Diseases
| | - Maria Abad Fernandez
- Department of Microbiology and Immunology, University of North Carolina School of Medicine, Chapel Hill
| | - Laura White
- Department of Microbiology and Immunology, University of North Carolina School of Medicine, Chapel Hill
| | - Kristal-An Agrupis
- Institute of Child Health and Human Development, National Institutes of Health, University of the Philippines Manila
| | - Jacqueline Deen
- Institute of Child Health and Human Development, National Institutes of Health, University of the Philippines Manila
| | | | - Michelle Ylade
- Institute of Child Health and Human Development, National Institutes of Health, University of the Philippines Manila
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Hossain MJ, Das M, Islam MW, Shahjahan M, Ferdous J. Community engagement and social participation in dengue prevention: A cross-sectional study in Dhaka City. Health Sci Rep 2024; 7:e2022. [PMID: 38572117 PMCID: PMC10987789 DOI: 10.1002/hsr2.2022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 03/09/2024] [Accepted: 03/13/2024] [Indexed: 04/05/2024] Open
Abstract
Background Dengue is a major public health concern in Bangladesh. This study aimed to assess the perceptions and practices of community members in Dhaka regarding community engagement and social participation for dengue prevention. Methods A cross-sectional online survey was conducted in Dhaka City from May 2022 to December 2022. The respondents were randomly selected. The association between community participation and prevention practices was tested using the χ 2 test. Results The findings of this study indicate that the majority of participants (92%) believed that community effort would be relied upon in the event of a dengue outbreak. Environmental cleaning campaigns were the preferred approach, and religious leaders viewed them positively. This study also revealed significant variations in knowledge levels, with those involved in community efforts and mass gatherings demonstrating greater knowledge. This study sheds light on the demographic factors that influence dengue knowledge and provides valuable insights into the development of targeted public health interventions. Conclusion The study revealed negative perceptions and limited participation in dengue prevention among participants, with the majority demonstrating a poor understanding of preventive measures. While some showed positive attitudes towards community engagement, significant disparities existed in participation, highlighting the need for targeted educational campaigns and enhanced community mobilization efforts. Moreover, the importance of multisectoral collaboration is emphasized, underscoring the need for coordinated efforts among health departments, NGOs, religious institutions, and community leaders to effectively combat dengue transmission. Recommendations include ongoing educational initiatives, targeted interventions to promote community involvement, and fostering collaboration across sectors to strengthen dengue prevention efforts and to safeguard public health.
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Affiliation(s)
- Md Jubayer Hossain
- Population Health Studies Division, Center for Health InnovationResearch, Action, and Learning—Bangladesh (CHIRAL Bangladesh)DhakaBangladesh
| | - Manisha Das
- Population Health Studies Division, Center for Health InnovationResearch, Action, and Learning—Bangladesh (CHIRAL Bangladesh)DhakaBangladesh
- Dhaka Medical College and HospitalDhakaBangladesh
| | - Md Wahidul Islam
- Population Health Studies Division, Center for Health InnovationResearch, Action, and Learning—Bangladesh (CHIRAL Bangladesh)DhakaBangladesh
- Department of MicrobiologyJagannath UniversityDhakaBangladesh
| | - Muhibullah Shahjahan
- Population Health Studies Division, Center for Health InnovationResearch, Action, and Learning—Bangladesh (CHIRAL Bangladesh)DhakaBangladesh
- Department of MicrobiologyJagannath UniversityDhakaBangladesh
| | - Jannatul Ferdous
- Population Health Studies Division, Center for Health InnovationResearch, Action, and Learning—Bangladesh (CHIRAL Bangladesh)DhakaBangladesh
- Department of MicrobiologyJagannath UniversityDhakaBangladesh
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Matute DR, Cooper BS. Aedes albopictus is present in the lowlands of southern Zambia. Acta Trop 2024; 251:107115. [PMID: 38184292 PMCID: PMC11586621 DOI: 10.1016/j.actatropica.2023.107115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 12/12/2023] [Accepted: 12/27/2023] [Indexed: 01/08/2024]
Abstract
Identifying the current geographic range of disease vectors is a critical first step towards determining effective mechanisms for controlling and potentially eradicating them. This is particularly true given that historical vector ranges may expand due to changing climates and human activity. The Aedes subgenus Stegomyia contains over 100 species, and among them, Ae. aegypti and Ae. albopictus mosquitoes represent the largest concern for public health, spreading dengue, chikungunya, and zika viruses. While Ae. aegypti has been observed in the country of Zambia for decades, Ae. albopictus has not. In 2015 we sampled four urban and three rural areas in Zambia for Aedes species. Using DNA barcoding, we confirmed the presence of immature and adult Ae. albopictus at two sites: Siavonga and Livingstone. These genotypes seem most closely related to specimens previously collected in Mozambique based on mtDNA barcoding. We resampled Siavonga and Livingstone sites in 2019, again observing immature and adult Ae. albopictus at both sites. Relative Ae. albopictus frequencies were similar between sites, with the exception of immature life stages, which were higher in Siavonga than in Livingstone in 2019. While Ae. albopictus frequencies did not vary through time in Livingstone, both immature and adult frequencies increased through time in Siavonga. This report serves to document the presence of Ae. albopictus in Zambia, which will contribute to understanding the potential public health implications of this disease vector in southern Africa.
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Affiliation(s)
- Daniel R Matute
- Biology Department, University of North Carolina, 250 Bell Tower Drive, Genome Sciences Building, Chapel Hill, NC 27510, United States.
| | - Brandon S Cooper
- Division of Biological Sciences, University of Montana, 32 Campus Dr., Missoula, MT 59812, United States
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Ilic I, Ilic M. Global Patterns of Trends in Incidence and Mortality of Dengue, 1990-2019: An Analysis Based on the Global Burden of Disease Study. MEDICINA (KAUNAS, LITHUANIA) 2024; 60:425. [PMID: 38541151 PMCID: PMC10972128 DOI: 10.3390/medicina60030425] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Revised: 02/27/2024] [Accepted: 02/29/2024] [Indexed: 07/21/2024]
Abstract
Background and Objectives: Dengue is an important public health concern that warrants an examination of the longer-term global trends of its disease burden. The aim of this study was to assess the trends in dengue incidence and mortality worldwide over the last three decades. Materials and Methods: A descriptive epidemiological study was carried out, investigating the trends in the incidence and mortality of dengue from 1990 to 2019. The dengue incidence and mortality data were obtained from the Global Burden of Disease study database. Trends were examined using joinpoint regression analysis. Results: Globally, there were 56.7 million new cases of dengue reported in 2019: the disease was diagnosed in 27.4 million males and 29.3 million females. A total of 36,055 (18,993 males and 17,032 females) related deaths were reported worldwide in 2019. In both sexes, about 60% of new cases were recorded in the South-East Asia region (16.3 million in males and 17.4 million in females). Globally, the incidence of dengue exhibited an increasing tendency from 1990 to 2019 in both sexes (equally, by 1.2% per year). A significantly decreasing trend in the mortality of dengue was recorded only in females (by -0.5% per year), while an increasing trend was observed in males (by +0.6% per year). Conclusions: The rise in the number of new dengue cases and deaths in the world in the last several decades suggests a need for implementing more effective prevention and management measures.
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Affiliation(s)
- Irena Ilic
- Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia;
| | - Milena Ilic
- Department of Epidemiology, Faculty of Medical Sciences, University of Kragujevac, 34000 Kragujevac, Serbia
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31
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Sohail A, Anders KL, McGuinness SL, Leder K. The epidemiology of imported and locally acquired dengue in Australia, 2012-2022. J Travel Med 2024; 31:taae014. [PMID: 38243558 PMCID: PMC10911064 DOI: 10.1093/jtm/taae014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 01/15/2024] [Accepted: 01/16/2024] [Indexed: 01/21/2024]
Abstract
BACKGROUND Dengue is the most important arboviral disease globally and poses ongoing challenges for control including in non-endemic countries with competent mosquito vectors at risk of local transmission through imported cases. We examined recent epidemiological trends in imported and locally acquired dengue in Australia, where the Wolbachia mosquito population replacement method was implemented throughout dengue-prone areas of northern Queensland between 2011 and 2019. METHODS We analysed dengue cases reported to the Australian National Notifiable Disease Surveillance System between January 2012 and December 2022, and Australian traveller movement data. RESULTS Between 2012 and 2022, 13 343 dengue cases were reported in Australia (median 1466 annual cases); 12 568 cases (94.2%) were imported, 584 (4.4%) were locally acquired and 191 (1.4%) had no origin recorded. Locally acquired cases decreased from a peak in 2013 (n = 236) to zero in 2021-22. Annual incidence of imported dengue ranged from 8.29/100 000 (n = 917 cases) to 22.10/100 000 (n = 2203) annual traveller movements between 2012 and 2019, decreased in 2020 (6.74/100 000 traveller movements; n = 191) and 2021 (3.32/100 000 traveller movements; n = 10) during COVID-19-related border closures, then rose to 34.79/100 000 traveller movements (n = 504) in 2022. Imported cases were primarily acquired in Southeast Asia (n = 9323; 74%), Southern and Central Asia (n = 1555; 12%) and Oceania (n = 1341; 11%). Indonesia (n = 5778; 46%) and Thailand (n = 1483; 12%) were top acquisition countries. DENV-2 (n = 2147; 42%) and DENV-1 (n = 1526; 30%) were predominant serotypes. CONCLUSION Our analysis highlights Australia's successful control of locally acquired dengue with Wolbachia. Imported dengue trends reflect both Australian travel destinations and patterns and local epidemiology in endemic countries.
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Affiliation(s)
- Asma Sohail
- School of Public Health and Preventive Medicine, Monash University, 553 St Kilda Road, Melbourne, Victoria 3004, Australia
- Infectious Diseases Department, Grampians Health Service, 1 Drummond Street North, Ballarat, Victoria 3350, Australia
| | - Katherine L Anders
- School of Public Health and Preventive Medicine, Monash University, 553 St Kilda Road, Melbourne, Victoria 3004, Australia
- World Mosquito Program, Monash University, 12 Innovation Walk, Clayton, Victoria 3800, Australia
| | - Sarah L McGuinness
- School of Public Health and Preventive Medicine, Monash University, 553 St Kilda Road, Melbourne, Victoria 3004, Australia
- Infectious Diseases Department, Alfred Health, 55 Commercial Road, Melbourne, Victoria 3004, Australia
| | - Karin Leder
- School of Public Health and Preventive Medicine, Monash University, 553 St Kilda Road, Melbourne, Victoria 3004, Australia
- Victorian Infectious Diseases Service, Melbourne Health, 300 Grattan Street, Parkville, Victoria 3050, Australia
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Llorente Pérez YJ, Rodríguez-Acelas AL, Mattiello R, Cañon-Montañez W. Effectiveness of a Nursing Educational Intervention in Adults to Promote Control Behaviors Against Dengue: Protocol for a Randomized Controlled Trial. JMIR Res Protoc 2024; 13:e54286. [PMID: 38393755 PMCID: PMC10924258 DOI: 10.2196/54286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Accepted: 01/25/2024] [Indexed: 02/25/2024] Open
Abstract
BACKGROUND The increase in dengue cases can be attributed to social, demographic, environmental changes, or community-driven factors. In this regard, different strategies have been established in health education, using educational interventions as necessary tools for the reduction of the disease with the aim of reinforcing and stimulating the prevention and control of dengue. OBJECTIVE This study aims to evaluate the effectiveness of a nursing educational intervention for dengue control. METHODS A randomized controlled trial will be conducted with adults living in rural areas and participating in health promotion and disease prevention programs. We will enroll 116 adults. Adults will be randomized 1:1, with 58 adults assigned to the educational intervention group and 58 to the usual care group. Participants will receive 4 sessions over the course of a month, 1 week apart, and will be followed up for 1 month after the end of the educational intervention. Nursing Outcome Classification labels will be used to measure the outcomes: risk control (1902) and participation in health care decisions (1606). RESULTS The participants in the intervention group are expected to achieve better dengue control behaviors than those in the usual care group. CONCLUSIONS Risk factors are fostered by the community, largely caused by artificial reservoirs or unprotected tanks in homes; also, the lack of information hinders the identification of symptomatology and the poor implementation of effective measures, and the development of standardized educational strategies can contribute to efficient and cost-effective control of the disease. TRIAL REGISTRATION ClinicalTrials.gov NCT05321264; https://clinicaltrials.gov/study/NCT05321264. INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID) PRR1-10.2196/54286.
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Affiliation(s)
- Yolima Judith Llorente Pérez
- Faculty of Nursing, Universidad de Antioquia, Medellín, Colombia
- Nursing Program, Universidad de Córdoba, Montería, Colombia
| | | | - Rita Mattiello
- Postgraduate Program in Epidemiology, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
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Hoffman SA, Maldonado YA. Emerging and re-emerging pediatric viral diseases: a continuing global challenge. Pediatr Res 2024; 95:480-487. [PMID: 37940663 PMCID: PMC10837080 DOI: 10.1038/s41390-023-02878-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 10/08/2023] [Accepted: 10/19/2023] [Indexed: 11/10/2023]
Abstract
The twenty-first century has been marked by a surge in viral epidemics and pandemics, highlighting the global health challenge posed by emerging and re-emerging pediatric viral diseases. This review article explores the complex dynamics contributing to this challenge, including climate change, globalization, socio-economic interconnectedness, geopolitical tensions, vaccine hesitancy, misinformation, and disparities in access to healthcare resources. Understanding the interactions between the environment, socioeconomics, and health is crucial for effectively addressing current and future outbreaks. This scoping review focuses on emerging and re-emerging viral infectious diseases, with an emphasis on pediatric vulnerability. It highlights the urgent need for prevention, preparedness, and response efforts, particularly in resource-limited communities disproportionately affected by climate change and spillover events. Adopting a One Health/Planetary Health approach, which integrates human, animal, and ecosystem health, can enhance equity and resilience in global communities. IMPACT: We provide a scoping review of emerging and re-emerging viral threats to global pediatric populations This review provides an update on current pediatric viral threats in the context of the COVID-19 pandemic This review aims to sensitize clinicians, epidemiologists, public health practitioners, and policy stakeholders/decision-makers to the role these viral diseases have in persistent pediatric morbidity and mortality.
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Affiliation(s)
- Seth A Hoffman
- Division of Infectious Diseases and Geographic Medicine, Department of Medicine, Stanford University School of Medicine, Stanford, CA, USA.
| | - Yvonne A Maldonado
- Department of Pediatrics, Stanford University School of Medicine, Stanford, CA, USA
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Recker M, Fleischmann WA, Nghia TH, Truong NV, Nam LV, Duc Anh D, Song LH, The NT, Anh CX, Hoang NV, My Truong N, Toan NL, Kremsner PG, Velavan TP. Markers of prolonged hospitalisation in severe dengue. PLoS Negl Trop Dis 2024; 18:e0011922. [PMID: 38289968 PMCID: PMC10857710 DOI: 10.1371/journal.pntd.0011922] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 02/09/2024] [Accepted: 01/15/2024] [Indexed: 02/01/2024] Open
Abstract
BACKGROUND Dengue is one of the most common diseases in the tropics and subtropics. Whilst mortality is a rare event when adequate supportive care can be provided, a large number of patients get hospitalised with dengue every year that places a heavy burden on local health systems. A better understanding of the support required at the time of hospitalisation is therefore of critical importance for healthcare planning, especially when resources are limited during major outbreaks. METHODS Here we performed a retrospective analysis of clinical data from over 1500 individuals hospitalised with dengue in Vietnam between 2017 and 2019. Using a broad panel of potential biomarkers, we sought to evaluate robust predictors of prolonged hospitalisation periods. RESULTS Our analyses revealed a lead-time bias, whereby early admission to hospital correlates with longer hospital stays - irrespective of disease severity. Importantly, taking into account the symptom duration prior to hospitalisation significantly affects observed associations between hospitalisation length and previously reported risk markers of prolonged stays, which themselves showed marked inter-annual variations. Once corrected for symptom duration, age, temperature at admission and elevated neutrophil-to-lymphocyte ratio were found predictive of longer hospitalisation periods. CONCLUSION This study demonstrates that the time since dengue symptom onset is one of the most significant predictors for the length of hospital stays, independent of the assigned severity score. Pre-hospital symptom durations need to be accounted for to evaluate clinically relevant biomarkers of dengue hospitalisation trajectories.
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Affiliation(s)
- Mario Recker
- Institute for Tropical Medicine, University Hospital Tübingen, Tübingen, Germany
- Centre for Ecology and Conservation, University of Exeter, Penryn Campus, Penryn, United Kingdom
| | - Wim A. Fleischmann
- Institute for Tropical Medicine, University Hospital Tübingen, Tübingen, Germany
| | - Trinh Huu Nghia
- 103 Military Hospital, Vietnam Military Medical University, Hanoi, Vietnam
| | - Nguyen Van Truong
- 103 Military Hospital, Vietnam Military Medical University, Hanoi, Vietnam
| | - Le Van Nam
- 103 Military Hospital, Vietnam Military Medical University, Hanoi, Vietnam
| | - Do Duc Anh
- Institute for Tropical Medicine, University Hospital Tübingen, Tübingen, Germany
- Vietnamese-German Center for Medical Research, VG-CARE, Hanoi, Vietnam
| | - Le Huu Song
- Vietnamese-German Center for Medical Research, VG-CARE, Hanoi, Vietnam
- 108 Military Central Hospital, Hanoi, Vietnam
| | - Nguyen Trong The
- Vietnamese-German Center for Medical Research, VG-CARE, Hanoi, Vietnam
- 108 Military Central Hospital, Hanoi, Vietnam
| | | | | | - Nhat My Truong
- Vietnamese-German Center for Medical Research, VG-CARE, Hanoi, Vietnam
- 108 Military Central Hospital, Hanoi, Vietnam
| | - Nguyen Linh Toan
- Vietnamese-German Center for Medical Research, VG-CARE, Hanoi, Vietnam
- Department of Pathophysiology, Vietnam Military Medical University, Hanoi, Vietnam
| | - Peter G. Kremsner
- Institute for Tropical Medicine, University Hospital Tübingen, Tübingen, Germany
- Centre de Recherches Médicales de Lambaréné (CERMEL), Gabon
| | - Thirumalaisamy P. Velavan
- Institute for Tropical Medicine, University Hospital Tübingen, Tübingen, Germany
- Vietnamese-German Center for Medical Research, VG-CARE, Hanoi, Vietnam
- Faculty of Medicine, Duy Tan University, Da Nang, Vietnam
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Lee S, Eom S, Pyeon M, Moon M, Yun J, Lee J, Choi YS, Lee JH. Identification of 2,4-Di- tert-butylphenol as a Novel Agonist for Insect Odorant Receptors. Int J Mol Sci 2023; 25:220. [PMID: 38203390 PMCID: PMC10779170 DOI: 10.3390/ijms25010220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Revised: 12/19/2023] [Accepted: 12/21/2023] [Indexed: 01/12/2024] Open
Abstract
Odorant molecules interact with odorant receptors (ORs) lining the pores on the surface of the sensilla on an insect's antennae and maxillary palps. This interaction triggers an electrical signal that is transmitted to the insect's nervous system, thereby influencing its behavior. Orco, an OR coreceptor, is crucial for olfactory transduction, as it possesses a conserved sequence across the insect lineage. In this study, we focused on 2,4-di-tert-butylphenol (DTBP), a single substance present in acetic acid bacteria culture media. We applied DTBP to oocytes expressing various Drosophila melanogaster odor receptors and performed electrophysiology experiments. After confirming the activation of DTBP on the receptor, the binding site was confirmed through point mutations. Our findings confirmed that DTBP interacts with the insect Orco subunit. The 2-heptanone, octanol, and 2-hexanol were not activated for the Orco homomeric channel, but DTBP was activated, and the EC50 value was 13.4 ± 3.0 μM. Point mutations were performed and among them, when the W146 residue changed to alanine, the Emax value was changed from 1.0 ± 0 in the wild type to 0.0 ± 0 in the mutant type, and all activity was decreased. Specifically, DTBP interacted with the W146 residue of the Orco subunit, and the activation manner was concentration-dependent and voltage-independent. This molecular-level analysis provides the basis for novel strategies to minimize pest damage. DTBP, with its specific binding to the Orco subunit, shows promise as a potential pest controller that can exclusively target insects.
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Affiliation(s)
- Shinhui Lee
- Department of Biotechnology, Chonnam National University, Gwangju 61186, Republic of Korea; (S.L.); (S.E.); (J.Y.)
| | - Sanung Eom
- Department of Biotechnology, Chonnam National University, Gwangju 61186, Republic of Korea; (S.L.); (S.E.); (J.Y.)
| | - Minsu Pyeon
- Department of Biotechnology, Chonnam National University, Gwangju 61186, Republic of Korea; (S.L.); (S.E.); (J.Y.)
| | - Myungmi Moon
- Department of Biotechnology, Chonnam National University, Gwangju 61186, Republic of Korea; (S.L.); (S.E.); (J.Y.)
| | - Jihwon Yun
- Department of Biotechnology, Chonnam National University, Gwangju 61186, Republic of Korea; (S.L.); (S.E.); (J.Y.)
| | - Jaehyeong Lee
- Organic Agriculture Division, National Institute of Agricultural Sciences, Wanju 55365, Republic of Korea;
| | - Yong-Seok Choi
- Bioenvironmental Division, Chungnam Agricultural Research and Extension Services, Yesan 32418, Republic of Korea
| | - Junho H. Lee
- Department of Biotechnology, Chonnam National University, Gwangju 61186, Republic of Korea; (S.L.); (S.E.); (J.Y.)
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Odio C, Yek C, Hasund CM, Man S, Ly P, Nhek S, Chea S, Lon C, Voirin C, Huy R, Leang R, Huch C, Oliveira LF, Manning JE, Katzelnick LC. Immunity to non-dengue flaviviruses impacts dengue virus IgG ELISA specificity in Cambodia. MEDRXIV : THE PREPRINT SERVER FOR HEALTH SCIENCES 2023:2023.11.17.23298701. [PMID: 38076831 PMCID: PMC10705617 DOI: 10.1101/2023.11.17.23298701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/18/2023]
Abstract
Seroprevalence studies are the gold standard for disease surveillance, and serology was used to determine eligibility for the first licensed dengue vaccine. However, expanding flavivirus endemicity, co-circulation, and vaccination complicate serology results. Among 713 healthy Cambodian children, a commonly used indirect dengue virus IgG ELISA (PanBio) had a lower specificity than previously reported (94% vs. 100%). Of those with false positive PanBio results, 46% had detectable neutralizing antibodies against other flaviviruses, with the highest frequency against West Nile virus (WNV). Immunity to non-dengue flaviviruses can impact dengue surveillance and potentially pre-vaccine screening efforts.
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Affiliation(s)
- Camila Odio
- Viral Epidemiology and Immunity Unit, Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Christina Yek
- International Center of Excellence in Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Phnom Penh, Cambodia
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892
| | - Chloe M. Hasund
- Viral Epidemiology and Immunity Unit, Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Somnang Man
- International Center of Excellence in Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Phnom Penh, Cambodia
| | - Piseth Ly
- International Center of Excellence in Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Phnom Penh, Cambodia
| | - Sreynik Nhek
- International Center of Excellence in Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Phnom Penh, Cambodia
| | - Sophana Chea
- International Center of Excellence in Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Phnom Penh, Cambodia
| | - Chanthap Lon
- International Center of Excellence in Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Phnom Penh, Cambodia
| | - Charlie Voirin
- Viral Epidemiology and Immunity Unit, Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Rekol Huy
- National Center for Parasitology, Entomology, and Malaria Control, Ministry of Health, Phnom Penh, Cambodia
| | - Rithea Leang
- National Center for Parasitology, Entomology, and Malaria Control, Ministry of Health, Phnom Penh, Cambodia
| | - Chea Huch
- National Center for Parasitology, Entomology, and Malaria Control, Ministry of Health, Phnom Penh, Cambodia
| | - L. Fabiano Oliveira
- International Center of Excellence in Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Phnom Penh, Cambodia
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892
| | - Jessica E. Manning
- International Center of Excellence in Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Phnom Penh, Cambodia
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892
| | - Leah C. Katzelnick
- Viral Epidemiology and Immunity Unit, Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
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Matute DR, Cooper BS. Aedes albopictus is present in the lowlands of southern Zambia. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.09.29.560125. [PMID: 37808696 PMCID: PMC10557682 DOI: 10.1101/2023.09.29.560125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/10/2023]
Abstract
Identifying the current geographic range of disease vectors is a critical first step towards determining effective mechanisms for controlling and potentially eradicating them. This is particularly true given that historical vector ranges may expand due to changing climates and human activity. The Aedes subgenus Stegomyia contains over 100 species, and among them, Ae. aegypti and Ae. albopictus mosquitoes represent the largest concern for public health, spreading dengue, chikungunya, and Zika viruses. While Ae. aegypti has been observed in the country of Zambia for decades, Ae. albopictus has not. In 2015 we sampled four urban and two rural areas in Zambia for Aedes species. Using DNA barcoding, we confirmed the presence of immature and adult Ae. albopictus at two rural sites: Siavonga and Livingstone. These genotypes seem most closely related to specimens previously collected in Mozambique based on CO1 sequence from mtDNA. We resampled Siavonga and Livingstone sites in 2019, again observing immature and adult Ae. albopictus at both sites. Relative Ae. albopictus frequencies were similar between sites, with the exception of immature life stages, which were higher in Siavonga than in Livingstone in 2019. While Ae. albopictus frequencies did not vary through time in Livingstone, both immature and adult frequencies increased through time in Siavonga. This report serves to document the presence of Ae. albopictus in Zambia, which will contribute to the process of determining the potential public health implications of this disease vector in Central Africa.
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Affiliation(s)
- Daniel R Matute
- Biology Department, University of North Carolina, 250 Bell Tower Drive, Genome Sciences Building, Chapel Hill, NC 27510
| | - Brandon S Cooper
- Division of Biological Sciences, University of Montana, 32 Campus Dr., Missoula, MT 59812
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Luu HVL, Nguyen HH, Satyal P, Vo VH, Ngo GH, Pham VT, Setzer WN. Chemical Composition, Larvicidal and Molluscicidal Activity of Essential Oils of Six Guava Cultivars Grown in Vietnam. PLANTS (BASEL, SWITZERLAND) 2023; 12:2888. [PMID: 37571040 PMCID: PMC10421063 DOI: 10.3390/plants12152888] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 07/27/2023] [Accepted: 08/01/2023] [Indexed: 08/13/2023]
Abstract
Diseases transmitted by mosquitoes and snails cause a large burden of disease in less developed countries, especially those with low-income levels. An approach to control vectors and intermediate hosts based on readily available essential oils, which are friendly to the environment and human health, may be an effective solution for disease control. Guava is a fruit tree grown on a large scale in many countries in the tropics, an area heavily affected by tropical diseases transmitted by mosquitoes and snails. Previous studies have reported that the extracted essential oils of guava cultivars have high yields, possess different chemotypes, and exhibit toxicity to different insect species. Therefore, this study was carried out with the aim of studying the chemical composition and pesticide activities of six cultivars of guava grown on a large scale in Vietnam. The essential oils were extracted by hydrodistillation using a Clevenger-type apparatus for 6 h. The components of the essential oils were determined using gas-chromatography-mass-spectrometry (GC-MS) analysis. Test methods for pesticide activities were performed in accordance with WHO guidelines and modifications. Essential oil samples from Vietnam fell into two composition-based clusters, one of (E)-β-caryophyllene and the other of limonene/(E)-β-caryophyllene. The essential oils PG03 and PG05 show promise as environmentally friendly pesticides when used to control Aedes mosquito larvae with values of 24 h LC50-aegypti of 0.96 and 0.40 µg/mL while 24 h LC50-albopictus of 0.50 and 0.42 µg/mL. These two essential oils showed selective toxicity against Aedes mosquito larvae and were safe against the non-target organism Anisops bouvieri. Other essential oils may be considered as molluscicides against Physa acuta (48 h LC50 of 4.10 to 5.00 µg/mL) and Indoplanorbis exustus (48 h LC50 of 3.85 to 7.71 µg/mL) and with less toxicity to A. bouvieri.
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Affiliation(s)
- Huynh Van Long Luu
- Institute of Applied Technology, Thu Dau Mot University, 06 Tran Van On, Thu Dau Mot City 820000, Vietnam;
| | - Huy Hung Nguyen
- Center for Advanced Chemistry, Institute of Research and Development, Duy Tan University, 03 Quang Trung, Da Nang 550000, Vietnam;
- Department of Pharmacy, Duy Tan University, 03 Quang Trung, Da Nang 550000, Vietnam;
| | - Prabodh Satyal
- Aromatic Plant Research Center, 230 N 1200 E, Suite 100, Lehi, UT 84043, USA; (P.S.); (W.N.S.)
| | - Van Hoa Vo
- Department of Pharmacy, Duy Tan University, 03 Quang Trung, Da Nang 550000, Vietnam;
| | - Gia Huy Ngo
- Center for Advanced Chemistry, Institute of Research and Development, Duy Tan University, 03 Quang Trung, Da Nang 550000, Vietnam;
| | - Van The Pham
- Laboratory of Ecology and Environmental Management, Science and Technology Advanced Institute, Van Lang University, Ho Chi Minh City 70000, Vietnam;
- Faculty of Applied Technology, School of Technology, Van Lang University, Ho Chi Minh City 70000, Vietnam
| | - William N. Setzer
- Aromatic Plant Research Center, 230 N 1200 E, Suite 100, Lehi, UT 84043, USA; (P.S.); (W.N.S.)
- Department of Chemistry, University of Alabama in Huntsville, Huntsville, AL 35899, USA
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Hossain MS, Noman AA, Mamun SMAA, Mosabbir AA. Twenty-two years of dengue outbreaks in Bangladesh: epidemiology, clinical spectrum, serotypes, and future disease risks. Trop Med Health 2023; 51:37. [PMID: 37434247 DOI: 10.1186/s41182-023-00528-6] [Citation(s) in RCA: 47] [Impact Index Per Article: 23.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Accepted: 07/06/2023] [Indexed: 07/13/2023] Open
Abstract
Dengue is the most rapidly spreading mosquito-borne disease and has become a major public health threat, particularly for tropical and subtropical countries including Bangladesh. This comprehensive review aims to summarize the overall scenario of dengue, including disease burden, clinical spectrum, seroprevalence, circulating serotypes/genotypes, and spatial distribution since the first recorded outbreak in Bangladesh. Since the first recorded outbreak in 2000, dengue epidemiology has shown the typical epidemic pattern with more frequent and bigger outbreaks and gradual geographic expansion to non-endemic regions in Bangladesh. For instance, highly confined Rohingya refugee camps that provide shelters to nearly 1.2 million forcibly displaced vulnerable Myanmar nationals in Cox's Bazar district confronted a massive outbreak in 2022. Recent major outbreaks are found to be associated with the emergence of serotype DENV-3, which was undetected for a long time. Consequently, changes in serotypes might be attributed to increased severity in clinical manifestation in recent years. The existing weak surveillance and risk management systems are inadequate to deal with impending dengue risks. The healthcare system, particularly at the district level, is not prepared to manage impending large-scale dengue outbreaks in Bangladesh. Our findings would contribute to the development of strategies for dengue control and management in Bangladesh as well as other similar settings elsewhere in the world.
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Affiliation(s)
- Mohammad Sorowar Hossain
- Department of Emerging and Neglected Diseases, Biomedical Research Foundation, Dhaka, Bangladesh.
- Department of Environmental Science and Management, Independent University, Bangladesh, Dhaka, Bangladesh.
| | - Abdullah Al Noman
- Department of Emerging and Neglected Diseases, Biomedical Research Foundation, Dhaka, Bangladesh
| | - S M Abdullah Al Mamun
- Department of Emerging and Neglected Diseases, Biomedical Research Foundation, Dhaka, Bangladesh
| | - Abdullah Al Mosabbir
- Department of Emerging and Neglected Diseases, Biomedical Research Foundation, Dhaka, Bangladesh
- Department of Hematology & BMT Unit, Dhaka Medical College Hospital, Dhaka, Bangladesh
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Mendoza-Cano O, Trujillo X, Huerta M, Ríos-Silva M, Lugo-Radillo A, Benites-Godínez V, Bricio-Barrios JA, Ríos-Bracamontes EF, Uribe-Ramos JM, Baltazar-Rodríguez GM, Murillo-Zamora E. Assessing the Relationship between Annual Surface Temperature Changes and the Burden of Dengue: Implications for Climate Change and Global Health Outcomes. Trop Med Infect Dis 2023; 8:351. [PMID: 37505647 PMCID: PMC10383228 DOI: 10.3390/tropicalmed8070351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Revised: 06/27/2023] [Accepted: 06/28/2023] [Indexed: 07/29/2023] Open
Abstract
Dengue fever remains a significant global health concern, imposing a substantial burden on public health systems worldwide. Recent studies have suggested that climate change, specifically the increase in surface temperatures associated with global warming, may impact the transmission dynamics of dengue. This study aimed to assess the relationship between annual surface temperature changes from 1961 to 2019 and the burden of dengue in 185 countries. The dengue burden was evaluated for 2019 using disability-adjusted life years (DALYs) and the annual rate of change (ARC) in DALY rates assessed from 1990 to 2019. A cross-sectional and ecological analysis was conducted using two publicly available datasets. Regression coefficients (β) and 95% confidence intervals (CI) were used to examine the relationship between annual surface temperature changes and the burden of dengue. The results revealed a significant negative relationship between mean surface temperatures and DALY rates in 2019 (β = -16.9, 95% CI -26.9 to -6.8). Similarly, a significant negative relationship was observed between the temperature variable and the ARC (β = -0.99, 95% CI -1.66 to -0.32). These findings suggest that as temperatures continue to rise, the burden of dengue may globally decrease. The ecology of the vector and variations in seasons, precipitation patterns, and humidity levels may partially contribute to this phenomenon. Our study contributes to the expanding body of evidence regarding the potential implications of climate change for dengue dynamics. It emphasizes the critical importance of addressing climate change as a determinant of global health outcomes.
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Affiliation(s)
- Oliver Mendoza-Cano
- Facultad de Ingeniería Civil, Universidad de Colima, km. 9 Carretera Colima-Coquimatlán, Colima 28400, México
| | - Xóchitl Trujillo
- Centro Universitario de Investigaciones Biomédicas, Universidad de Colima, Av. 25 de Julio 965, Col. Villas San Sebastián, Colima 28045, México
| | - Miguel Huerta
- Centro Universitario de Investigaciones Biomédicas, Universidad de Colima, Av. 25 de Julio 965, Col. Villas San Sebastián, Colima 28045, México
| | - Mónica Ríos-Silva
- Centro Universitario de Investigaciones Biomédicas, CONAHCyT-Universidad de Colima, Av. 25 de Julio 965, Col. Villas San Sebastián, Colima 28045, México
| | - Agustin Lugo-Radillo
- CONAHCyT-Facultad de Medicina y Cirugía, Universidad Autónoma Benito Juárez de Oaxaca, Ex Hacienda Aguilera S/N, Carr. a San Felipe del Agua, Oaxaca 68020, México
| | - Verónica Benites-Godínez
- Coordinación de Educación en Salud, Instituto Mexicano del Seguro Social, Calzada del Ejercito Nacional 14, Col. Fray Junípero Serra, Nayarit 63160, México
- Unidad Académica de Medicina, Universidad Autónoma de Nayarit, Ciudad de la Cultura Amado Nervo, Nayarit 63155, México
| | | | - Eder Fernando Ríos-Bracamontes
- Departamento de Medicina Interna, Hospital General de Zona No. 1, Instituto Mexicano del Seguro Social, Av. Lapislázuli 250, Col. El Haya, Colima 28984, México
| | - Juan Manuel Uribe-Ramos
- Facultad de Ingeniería Civil, Universidad de Colima, km. 9 Carretera Colima-Coquimatlán, Colima 28400, México
| | - Greta Mariana Baltazar-Rodríguez
- Escuela de Medicina y Ciencias de la Salud, Instituto Tecnológico y de Estudios Superiores de Monterrey, Campus Guadalajara, Av. General Ramón Corona No. 2514, Col Nuevo México, Jalisco 45201, México
| | - Efrén Murillo-Zamora
- Unidad de Investigación en Epidemiología Clínica, Instituto Mexicano del Seguro Social, Av. Lapislázuli 250, Col. El Haya, Colima 28984, México
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Fletcher IK, Gibb R, Lowe R, Jones KE. Differing taxonomic responses of mosquito vectors to anthropogenic land-use change in Latin America and the Caribbean. PLoS Negl Trop Dis 2023; 17:e0011450. [PMID: 37450491 PMCID: PMC10348580 DOI: 10.1371/journal.pntd.0011450] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Accepted: 06/08/2023] [Indexed: 07/18/2023] Open
Abstract
Anthropogenic land-use change, such as deforestation and urban development, can affect the emergence and re-emergence of mosquito-borne diseases, e.g., dengue and malaria, by creating more favourable vector habitats. There has been a limited assessment of how mosquito vectors respond to land-use changes, including differential species responses, and the dynamic nature of these responses. Improved understanding could help design effective disease control strategies. We compiled an extensive dataset of 10,244 Aedes and Anopheles mosquito abundance records across multiple land-use types at 632 sites in Latin America and the Caribbean. Using a Bayesian mixed effects modelling framework to account for between-study differences, we compared spatial differences in the abundance and species richness of mosquitoes across multiple land-use types, including agricultural and urban areas. Overall, we found that mosquito responses to anthropogenic land-use change were highly inconsistent, with pronounced responses observed at the genus- and species levels. There were strong declines in Aedes (-26%) and Anopheles (-35%) species richness in urban areas, however certain species such as Aedes aegypti, thrived in response to anthropogenic disturbance. When abundance records were coupled with remotely sensed forest loss data, we detected a strong positive response of dominant and secondary malaria vectors to recent deforestation. This highlights the importance of the temporal dynamics of land-use change in driving disease risk and the value of large synthetic datasets for understanding changing disease risk with environmental change.
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Affiliation(s)
- Isabel K. Fletcher
- Centre for Mathematical Modelling of Infectious Diseases, London School of Hygiene & Tropical Medicine, London, United Kingdom
- Centre on Climate Change and Planetary Health, London School of Hygiene & Tropical Medicine, London, United Kingdom
| | - Rory Gibb
- Centre for Mathematical Modelling of Infectious Diseases, London School of Hygiene & Tropical Medicine, London, United Kingdom
- Centre on Climate Change and Planetary Health, London School of Hygiene & Tropical Medicine, London, United Kingdom
- Centre for Biodiversity and Environment Research, University College London, London, United Kingdom
| | - Rachel Lowe
- Centre for Mathematical Modelling of Infectious Diseases, London School of Hygiene & Tropical Medicine, London, United Kingdom
- Centre on Climate Change and Planetary Health, London School of Hygiene & Tropical Medicine, London, United Kingdom
- Barcelona Supercomputing Center (BSC), Barcelona, Spain
- Catalan Institution for Research and Advanced Studies (ICREA), Barcelona, Spain
| | - Kate E. Jones
- Centre for Biodiversity and Environment Research, University College London, London, United Kingdom
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Issop A, Bertolotti A, Diarra YM, Maïza JC, Jarlet É, Cogne M, Doussiet É, Magny É, Maillard O, Nobécourt E, Gérardin P. Dengue clinical features and harbingers of severity in the diabetic patient: A retrospective cohort study on Reunion island, 2019. Travel Med Infect Dis 2023; 54:102586. [PMID: 37286121 DOI: 10.1016/j.tmaid.2023.102586] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 04/24/2023] [Accepted: 05/03/2023] [Indexed: 06/09/2023]
Abstract
AIM Diabetes mellitus is associated with both the risks of severe dengue and dengue-related deaths, however the factors characterizing dengue in the diabetic patient are ill-recognized. The objective of this hospital-based cohort study was to identify the factors characterizing dengue and those able to early identify dengue severity in the diabetic patient. METHODS We retrospectively analysed demographic, clinical and biological parameters at admission in the cohort of patients who consulted at the university hospital between January and June 2019 with confirmed dengue. Bivariate and multivariate analyses were conducted. RESULTS Of 936 patients, 184 patients (20%) were diabetic. One hundred and eighty-eight patients (20%) developed severe dengue according to the WHO 2009 definition. Diabetic patients were older and had more comorbidities than non-diabetics. In an age-adjusted logistic regression model, loss of appetite, altered mental status, high neutrophil to platelet ratios (>14.7), low haematocrit (≤ 38%), upper-range serum creatinine (>100 µmol/l) and high urea to creatinine ratio (>50) were indicative of dengue in the diabetic patient. A modified Poisson regression model identified four key independent harbingers of severe dengue in the diabetic patient: presence of diabetes complications, non-severe bleeding, altered mental status and cough. Among diabetes complications, diabetic retinopathy and neuropathy, but not diabetic nephropathy nor diabetic foot, were associated with severe dengue. CONCLUSION At hospital first presentation, dengue in the diabetic patient is characterized by deteriorations in appetite, mental and renal functioning, while severe dengue can be early identified by presence of diabetes complications, dengue-related non-severe haemorrhages, cough, and dengue-related encephalopathy.
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Affiliation(s)
- Azizah Issop
- Service d'Endocrinologie et Diabétologie, Centre Hospitalier Universitaire Réunion, Saint Pierre, La Réunion, France
| | - Antoine Bertolotti
- INSERM, CIC 1410, Centre Hospitalier Universitaire Réunion, Saint-Pierre, La Réunion, France; Service des Maladies Infectieuses, Médecine Interne, Dermatologie, Centre Hospitalier Universitaire Réunion, Saint Pierre, La Réunion, France
| | - Yves-Marie Diarra
- INSERM, CIC 1410, Centre Hospitalier Universitaire Réunion, Saint-Pierre, La Réunion, France; UMR PIMIT (CNRS 9192, INSERM U1187, IRD 249, Université de La Réunion), Sainte Clotilde, La Réunion, France
| | - Jean-Christophe Maïza
- Service d'Endocrinologie et Diabétologie, Centre Hospitalier Universitaire Réunion, Saint Pierre, La Réunion, France
| | - Éric Jarlet
- Service d'Endocrinologie et Diabétologie, Centre Hospitalier Universitaire Réunion, Saint Pierre, La Réunion, France
| | - Muriel Cogne
- Service d'Endocrinologie et Diabétologie, Centre Hospitalier Universitaire Réunion, Saint Pierre, La Réunion, France
| | - Éric Doussiet
- Service d'Endocrinologie et Diabétologie, Centre Hospitalier Universitaire Réunion, Saint Pierre, La Réunion, France; Plateforme de Recherche Clinique et Translationnelle, Centre Hospitalier Universitaire, Réunion, Saint-Pierre, La Réunion, France
| | - Éric Magny
- Service de Biochimie, Centre Hospitalier Universitaire Réunion, Saint Pierre, La Réunion, France
| | - Olivier Maillard
- INSERM, CIC 1410, Centre Hospitalier Universitaire Réunion, Saint-Pierre, La Réunion, France
| | - Estelle Nobécourt
- Service d'Endocrinologie et Diabétologie, Centre Hospitalier Universitaire Réunion, Saint Pierre, La Réunion, France; INSERM, CIC 1410, Centre Hospitalier Universitaire Réunion, Saint-Pierre, La Réunion, France; UMR Diabète Athérothrombose Thérapies Réunion Océan Indien (DéTROI) (INSERM U1188), Plateforme CYROI, University of La Réunion, Sainte Clotilde, La Réunion, France
| | - Patrick Gérardin
- INSERM, CIC 1410, Centre Hospitalier Universitaire Réunion, Saint-Pierre, La Réunion, France; Plateforme de Recherche Clinique et Translationnelle, Centre Hospitalier Universitaire, Réunion, Saint-Pierre, La Réunion, France.
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Vincent M, Paty MC, Gerardin P, Balleydier E, Etienne A, Daoudi J, Thouillot F, Jaffar-Bandjee MC, Menudier L. From dengue outbreaks to endemicity: Reunion Island, France, 2018 to 2021. Euro Surveill 2023; 28:2200769. [PMID: 37470738 PMCID: PMC10360367 DOI: 10.2807/1560-7917.es.2023.28.29.2200769] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Accepted: 03/07/2023] [Indexed: 07/21/2023] Open
Abstract
BackgroundAfter 40 years of limited viral circulation, Reunion Island has since 2018 experienced recurrent dengue outbreaks of increasing intensity and severity.AimWe aimed to report on the epidemiology and characteristics of dengue in Reunion Island between 2018 and 2021.MethodsBetween 2018 and August 2021, we systematically collected data on dengue cases via an automated transmission system between the health authorities and the medical laboratories. We set up additional surveillance systems for dengue-related activity in primary care, in emergency departments and in inpatient departments.ResultsUntil 2020, despite numerous cases, outbreaks had a limited public health impact because of few severe cases, low lethality and no heavy burden for the health care system. In 2021, however, the number of severe cases increased (from 0.4% of all cases in 2018 to 0.8% in 2021), as did the number of paediatric cases (from 8% in 2018 to 15% in 2021) and atypical clinical forms of dengue (108 cases of post-dengue maculopathy). Of note, haemorrhagic forms were rare and multi-organ failure was the most frequent severity throughout the study period. In parallel, the dominant serotype switched from DENV2 to DENV1 in 2020 and DENV1 became the only serotype detected in 2021.ConclusionThese findings indicate that dengue is becoming endemic in Reunion Island. Since comorbidities associated with severity of dengue are common in the population, health authorities should carefully consider the impact of dengue when addressing public health policies.
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Affiliation(s)
| | | | | | | | | | - Jamel Daoudi
- Santé Publique France, Saint Denis, Réunion, France
| | - Fabian Thouillot
- Service de Lutte Anti-Vectorielle, ARS Réunion, Saint Denis, Réunion, France
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Liu Q, Yan W, Qin C, Du M, Wang Y, Liu M, Liu J. Incidence and mortality trends of neglected tropical diseases and malaria in China and ASEAN countries from 1990 to 2019 and its association with the socio-demographic index. Glob Health Res Policy 2023; 8:22. [PMID: 37349771 PMCID: PMC10288805 DOI: 10.1186/s41256-023-00306-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2022] [Accepted: 06/07/2023] [Indexed: 06/24/2023] Open
Abstract
BACKGROUND People in China and the countries in the Association of Southeast Asian Nations (ASEAN) are affected by neglected tropical diseases and malaria (NTDM). In this study, we aimed to assess the current status and trends of NTDM burden from 1990 to 2019 in China and ASEAN countries, and also explore the association of NTDM burden with socio-demographic index (SDI). METHODS The data from the Global Burden of Diseases Study 2019 (GBD 2019) results were used. Absolute incidence and death number, and age-standardized incidence and mortality rate (ASIR and ASMR) of NTDM in China and ASEAN were extracted. The estimated annual percentage change (EAPC) and join-point regression in the rates quantified the trends. Nonlinear regression (second order polynomial) was used to explore the association between SDI and ASRs. RESULTS The ASIR of NTDM increased in China, Philippines, Singapore and Brunei, at a speed of an average 4.15% (95% CI 3.83-4.47%), 2.15% (1.68-2.63%), 1.03% (0.63-1.43%), and 0.88% (0.60-1.17%) per year. Uptrends of ASIR of NTDM in recent years were found in China (2014-2017, APC = 10.4%), Laos (2005-2013, APC = 3.9%), Malaysia (2010-2015, APC = 4.3%), Philippines (2015-2019, APC = 4.2%), Thailand (2015-2019, APC = 2.4%), and Vietnam (2014-2017, APC = 3.2%, all P < 0.05). Children < 5 had relatively low incidences but unexpectedly high mortality rates of NTDM in most ASEAN countries. Both incidence and mortality rates of NTDM were higher in older people. ASIR and ASMR of NTDM had a U-shaped association with SDI. CONCLUSIONS The burden of NTDM in China and ASEAN countries was still huge and affects vulnerable and impoverished populations' livelihoods, including children under the age of 5 and people aged 60 and older. Facing with the large burden and complex situation of NTDM in China and ASEAN countries, regional cooperating strategies are needed to reduce the burden of NTDM, so as to achieve the goal of elimination in the world.
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Affiliation(s)
- Qiao Liu
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, No. 38, Xueyuan Road, Haidian District, Beijing, 100191, China
| | - Wenxin Yan
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, No. 38, Xueyuan Road, Haidian District, Beijing, 100191, China
| | - Chenyuan Qin
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, No. 38, Xueyuan Road, Haidian District, Beijing, 100191, China
| | - Min Du
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, No. 38, Xueyuan Road, Haidian District, Beijing, 100191, China
| | - Yaping Wang
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, No. 38, Xueyuan Road, Haidian District, Beijing, 100191, China
| | - Min Liu
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, No. 38, Xueyuan Road, Haidian District, Beijing, 100191, China
- Institute for Global Health and Development, Peking University, No. 5 Yiheyuan Road, Haidian, Beijing, 100871, China
| | - Jue Liu
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, No. 38, Xueyuan Road, Haidian District, Beijing, 100191, China.
- Institute for Global Health and Development, Peking University, No. 5 Yiheyuan Road, Haidian, Beijing, 100871, China.
- Global Center for Infectious Disease and Policy Research & Global Health and Infectious Diseases Group, Peking University, No. 38, Xueyuan Road, Haidian District, Beijing, 100191, China.
- Key Laboratory of Epidemiology of Major Diseases (Peking University), Ministry of Education, No. 38, Xueyuan Road, Haidian District, Beijing, 100191, China.
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Rodriguez DM, Major CG, Sánchez-González L, Jones E, Delorey MJ, Alonso C, Rivera-Amill V, Paz-Bailey G, Adams LE. Dengue vaccine acceptability before and after the availability of COVID-19 vaccines in Puerto Rico. Vaccine 2023:S0264-410X(23)00516-9. [PMID: 37173267 PMCID: PMC10160531 DOI: 10.1016/j.vaccine.2023.04.081] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Accepted: 04/30/2023] [Indexed: 05/15/2023]
Abstract
Dengue is a growing public health threat, causing approximately 400 million infections annually. In June 2021, the Advisory Committee on Immunization Practices recommended the first dengue vaccine (CYD-TDV) for children aged 9-16 years with a previous dengue infection, living in endemic areas, such as Puerto Rico (PR). As the COVID-19 pandemic affected vaccine intention worldwide, we assessed dengue vaccine intention before (pre-COVID) and after (post-COVID) COVID-19 vaccine availability among participants enrolled in the Communities Organized to Prevent Arboviruses (COPA) cohort to prepare for dengue vaccine implementation in PR. We used logistic regression models to evaluate changes in dengue vaccine intention by interview timing and participant characteristics. Among 2,513 participants pre-COVID, 2,512 answered the dengue vaccine intention question for themselves, and 1,564 answered relative to their children. Post-COVID, dengue vaccine intention in adults increased for themselves from 73.4% to 84.5% (adjusted odds ratio (aOR) = 2.27, 95%CI: 1.90-2.71) and relative to their children from 75.6% to 85.5% (aOR = 2.21, 95%CI: 1.75-2.78). Among all participants, groups with higher dengue vaccine intention included those who reported previous year influenza vaccine uptake and those who reported being frequently bitten by mosquitos, compared to those who did not. Adult males were also more likely to intend to vaccinate themselves than females. Respondents who were employed or in school were less likely to intend to vaccinate compared to those who were not working. The primary reasons for vaccine hesitancy were concerns with side effects and not believing in vaccines, which should be considered during educational strategies prior to dengue vaccine implementation. In general, dengue vaccine intention is high in PR and has increased after COVID-19 vaccine availability, potentially due to increased awareness of vaccine importance during the COVID-19 pandemic.
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Affiliation(s)
- Dania M Rodriguez
- Centers for Disease Control and Prevention, Dengue Branch, 1324 Calle Canada, San Juan 00920, Puerto Rico.
| | - Chelsea G Major
- Centers for Disease Control and Prevention, Dengue Branch, 1324 Calle Canada, San Juan 00920, Puerto Rico.
| | - Liliana Sánchez-González
- Centers for Disease Control and Prevention, Dengue Branch, 1324 Calle Canada, San Juan 00920, Puerto Rico.
| | - Emma Jones
- Centers for Disease Control and Prevention, Division of Vector-borne Diseases, 3156 Rampart Road, Fort Collins, CO 80521, United States.
| | - Mark J Delorey
- Centers for Disease Control and Prevention, Division of Vector-borne Diseases, 3156 Rampart Road, Fort Collins, CO 80521, United States.
| | - Claudia Alonso
- Columbia University Mailman School of Public Health, 722 West 168th St., New York, NY 10032, United States.
| | - Vanessa Rivera-Amill
- Ponce Health Sciences University/Ponce Research Institute, 395 Dr Luis F Sala Street, Ponce 00716, Puerto Rico.
| | - Gabriela Paz-Bailey
- Centers for Disease Control and Prevention, Dengue Branch, 1324 Calle Canada, San Juan 00920, Puerto Rico.
| | - Laura E Adams
- Centers for Disease Control and Prevention, Dengue Branch, 1324 Calle Canada, San Juan 00920, Puerto Rico.
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Yek C, Li Y, Pacheco AR, Lon C, Duong V, Dussart P, Chea S, Lay S, Man S, Kimsan S, Huch C, Leang R, Huy R, Brook CE, Manning JE. Dengue in Cambodia 2002-2020: Cases, Characteristics and Capture by National Surveillance. MEDRXIV : THE PREPRINT SERVER FOR HEALTH SCIENCES 2023:2023.04.27.23289207. [PMID: 37333247 PMCID: PMC10274987 DOI: 10.1101/2023.04.27.23289207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/20/2023]
Abstract
Objective Data from 19 years of national dengue surveillance in Cambodia (2002-2020) were analyzed to describe trends in dengue case characteristics and incidence. Methods Generalized additive models were fitted to dengue case incidence and characteristics (mean age, case phenotype, fatality) over time. Dengue incidence in a pediatric cohort study (2018-2020) was compared to national data during the same period to evaluate disease under-estimation by national surveillance. Findings During 2002-2020, there were 353,270 cases of dengue (average age-adjusted incidence 1.75 cases/1,000 persons/year) recorded in Cambodia, with an estimated 2.1-fold increase in case incidence between 2002 and 2020 (slope = 0.0058, SE = 0.0021, p = 0.006). Mean age of infected individuals increased from 5.8 years in 2002 to 9.1 years in 2020 (slope = 0.18, SE = 0.088, p <0.001); case fatality rates decreased from 1.77% in 2002 to 0.10% in 2020 (slope = -0.16, SE = 0.0050, p <0.001). When compared to cohort data, national data under-estimated clinically apparent dengue case incidence by 5.0-fold (95% CI 0.2 - 26.5), and overall dengue case incidence (both apparent and inapparent cases) by 33.6-fold (range: 18.7- 53.6). Conclusion Dengue incidence in Cambodia is increasing and disease is shifting to older pediatric populations. National surveillance continues to under-estimate case numbers. Future interventions should account for disease under-estimation and shifting demographics for scaling and to target appropriate age groups.
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Affiliation(s)
- Christina Yek
- Critical Care Medicine Department, National Institutes of Health Clinical Center, Bethesda, MD, USA
| | - Yimei Li
- Department of Ecology and Evolution, University of Chicago, Chicago, IL, USA
| | - Andrea R Pacheco
- International Center of Excellence in Research, National Institute of Allergy and Infectious Diseases, Phnom Penh, Cambodia
| | - Chanthap Lon
- International Center of Excellence in Research, National Institute of Allergy and Infectious Diseases, Phnom Penh, Cambodia
| | - Veasna Duong
- Virology Unit, Institut Pasteur du Cambodge, Phnom Penh, Cambodia
| | - Philippe Dussart
- Virology Unit, Institut Pasteur du Cambodge, Phnom Penh, Cambodia
| | - Sophana Chea
- International Center of Excellence in Research, National Institute of Allergy and Infectious Diseases, Phnom Penh, Cambodia
| | - Sreyngim Lay
- International Center of Excellence in Research, National Institute of Allergy and Infectious Diseases, Phnom Penh, Cambodia
| | - Somnang Man
- International Center of Excellence in Research, National Institute of Allergy and Infectious Diseases, Phnom Penh, Cambodia
| | - Souv Kimsan
- National Center of Parasitology, Entomology, and Malaria Control, Ministry of Health, Phnom Penh, Cambodia
| | - Chea Huch
- National Center of Parasitology, Entomology, and Malaria Control, Ministry of Health, Phnom Penh, Cambodia
| | - Rithea Leang
- National Center of Parasitology, Entomology, and Malaria Control, Ministry of Health, Phnom Penh, Cambodia
| | - Rekol Huy
- National Center of Parasitology, Entomology, and Malaria Control, Ministry of Health, Phnom Penh, Cambodia
| | - Cara E Brook
- Department of Ecology and Evolution, University of Chicago, Chicago, IL, USA
| | - Jessica E Manning
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, Rockville, MD, USA
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López L, Dommar C, San José A, Meyers L, Fox S, Castro L, Rodó X. Changing risk of arboviral emergence in Catalonia due to higher probability of autochthonous outbreaks. Ecol Modell 2023. [DOI: 10.1016/j.ecolmodel.2022.110258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Liu Q, Yuan J, Yan W, Liang W, Liu M, Liu J. Association of natural flood disasters with infectious diseases in 168 countries and territories from 1990 to 2019: A worldwide observational study. GLOBAL TRANSITIONS 2023; 5:149-159. [DOI: 10.1016/j.glt.2023.09.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/30/2025]
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Torres Munguía JA, Badarau FC, Díaz Pavez LR, Martínez-Zarzoso I, Wacker KM. A global dataset of pandemic- and epidemic-prone disease outbreaks. Sci Data 2022; 9:683. [PMID: 36357405 PMCID: PMC9648436 DOI: 10.1038/s41597-022-01797-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Accepted: 10/20/2022] [Indexed: 11/12/2022] Open
Abstract
This paper presents a new dataset of infectious disease outbreaks collected from the Disease Outbreak News and the Coronavirus Dashboard produced by the World Health Organization. The dataset contains information on 70 infectious diseases and 2227 public health events that occurred over the period from January 1996 to March 2022 in 233 countries and territories around the world. We illustrate the potential use of this dataset to the research community by analysing the spatial distribution of disease outbreaks. We find evidence of spatial clusters of high incidences ("hot spots") in Africa, America, and Asia. This spatial analysis enables policymakers to identify the regions with the greatest likelihood of suffering from disease outbreaks and, taking into account their degree of preparedness and vulnerability, to develop policies that may help contain the spreading of future outbreaks. Further applications could focus on combining our data with other information sources to study, for instance, the link between environmental, globalization, and/or socioeconomic factors with disease outbreaks.
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Affiliation(s)
| | | | | | - Inmaculada Martínez-Zarzoso
- Faculty of Economic Sciences, Georg-August-Universität Göttingen, Göttingen, Germany
- Department of Economics, University Jaume I, Castelló de la Plana, Spain
| | - Konstantin M Wacker
- Faculty of Economics and Business, University of Groningen, Groningen, The Netherlands
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Wang Y, Wei Y, Li K, Jiang X, Li C, Yue Q, Zee BCY, Chong KC. Impact of extreme weather on dengue fever infection in four Asian countries: A modelling analysis. ENVIRONMENT INTERNATIONAL 2022; 169:107518. [PMID: 36155913 DOI: 10.1016/j.envint.2022.107518] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 08/04/2022] [Accepted: 09/10/2022] [Indexed: 06/16/2023]
Abstract
The rapid spread of dengue fever (DF) infection has posed severe threats to global health. Environmental factors, such as weather conditions, are believed to regulate DF spread. While previous research reported inconsistent change of DF risk with varying weather conditions, few of them evaluated the impact of extreme weather conditions on DF infection risk. This study aims to examine the short-term associations between extreme temperatures, extreme rainfall, and DF infection risk in South and Southeast Asia. A total of 35 locations in Singapore, Malaysia, Sri Lanka, and Thailand were included, and weekly DF data, as well as the daily meteorological data from 2012 to 2020 were collected. A two-stage meta-analysis was used to estimate the overall effect of extreme weather conditions on the DF infection risk. Location-specific associations were obtained by the distributed lag nonlinear models. The DF infection risk appeared to increase within 1-3 weeks after extremely high temperature (e.g. lag week 2: RR = 1.074, 95 % CI: 1.022-1.129, p = 0.005). Compared with no rainfall, extreme rainfall was associated with a declined DF risk (RR = 0.748, 95 % CI: 0.620-0.903, p = 0.003), and most of the impact was across 0-3 weeks lag. In addition, the DF risk was found to be associated with more intensive extreme weathers (e.g. seven extreme rainfall days per week: RR = 0.338, 95 % CI: 0.120-0.947, p = 0.039). This study provides more evidence in support of the impact of extreme weather conditions on DF infection and suggests better preparation of DF control measures according to climate change.
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Affiliation(s)
- Yawen Wang
- Jockey Club School of Public Health and Primary Care, The Chinese University of Hong Kong, Hong Kong Special Administrative Region
| | - Yuchen Wei
- Jockey Club School of Public Health and Primary Care, The Chinese University of Hong Kong, Hong Kong Special Administrative Region; Centre for Health Systems and Policy Research, The Chinese University of Hong Kong, Hong Kong Special Administrative Region
| | - Kehang Li
- Jockey Club School of Public Health and Primary Care, The Chinese University of Hong Kong, Hong Kong Special Administrative Region
| | - Xiaoting Jiang
- Jockey Club School of Public Health and Primary Care, The Chinese University of Hong Kong, Hong Kong Special Administrative Region
| | - Conglu Li
- Jockey Club School of Public Health and Primary Care, The Chinese University of Hong Kong, Hong Kong Special Administrative Region
| | - Qianying Yue
- Jockey Club School of Public Health and Primary Care, The Chinese University of Hong Kong, Hong Kong Special Administrative Region
| | - Benny Chung-Ying Zee
- Jockey Club School of Public Health and Primary Care, The Chinese University of Hong Kong, Hong Kong Special Administrative Region; Clinical Trials and Biostatistics Laboratory, Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, China
| | - Ka Chun Chong
- Jockey Club School of Public Health and Primary Care, The Chinese University of Hong Kong, Hong Kong Special Administrative Region; Clinical Trials and Biostatistics Laboratory, Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, China; Centre for Health Systems and Policy Research, The Chinese University of Hong Kong, Hong Kong Special Administrative Region.
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