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Borja-Tabora C, Fernando L, Lopez Medina E, Reynales H, Rivera L, Saez-Llorens X, Sirivichayakul C, Yu D, Folschweiller N, Moss KJ, Rauscher M, Tricou V, Zhao Y, Biswal S. Immunogenicity, Safety, and Efficacy of a Tetravalent Dengue Vaccine in Children and Adolescents: An Analysis by Age Group. Clin Infect Dis 2025; 80:199-206. [PMID: 38995684 PMCID: PMC11797386 DOI: 10.1093/cid/ciae369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2024] [Revised: 06/28/2024] [Accepted: 07/10/2024] [Indexed: 07/14/2024] Open
Abstract
BACKGROUND Dengue is an increasing threat to global health. This exploratory analysis evaluated the immunogenicity, safety, and vaccine efficacy (VE) of a live-attenuated tetravalent dengue vaccine (TAK-003) in participants enrolled in the phase 3 DEN-301 trial (NCT02747927), stratified by baseline age (4-5 years, 6-11 years, or 12-16 years). METHODS Participants were randomized 2:1 to receive 2 doses of TAK-003, administered 3 months apart, or placebo. Dengue serostatus was evaluated at enrolment. VE against virologically confirmed dengue (VCD) and hospitalized VCD; immunogenicity (geometric mean titers [GMTs]); and safety were evaluated per age group through ∼4 years postvaccination. RESULTS VE against VCD across serotypes was 43.5% (95% confidence interval [CI]: 25.3%, 57.3%) for 4-5 year-olds; 63.5% (95% CI: 56.9%, 69.1%) for 6-11 year-olds, and 67.7% (95% CI: 57.8%, 75.2%) for 12-16 year-olds. VE against hospitalized VCD was 63.8% (95% CI: 21.1%, 83.4%), 85.1% (95% CI: 77.1%, 90.3%), and 89.7% (95% CI: 77.9%, 95.2%), for the 3 age groups, respectively. GMTs remained elevated against all 4 serotypes for ∼4 years postvaccination, with no evident differences across age groups. No clear differences in safety by age were identified. CONCLUSIONS This exploratory analysis shows TAK-003 was efficacious in dengue prevention across age groups in children and adolescents 4-16 years of age living in dengue endemic areas. Relatively lower VE in 4-5 year-olds was potentially confounded by causative serotype distribution, small sample size, and VE by serotype, and should be considered in benefit-risk evaluations in this age group.
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Affiliation(s)
- Charissa Borja-Tabora
- Clinical Research Division, Research Institute for Tropical Medicine, Muntinlupa, Philippines
| | - LakKumar Fernando
- Centre for Clinical Management of Dengue & Dengue Haemorrhagic Fever, Negombo General Hospital, Negombo, Sri Lanka
| | - Eduardo Lopez Medina
- Centro de Estudios en Infectología Pediátrica CEIP, Universidad del Valle and Clínica Imbanaco Grupo Quironsalud, Cali, Colombia
| | | | - Luis Rivera
- Hospital Maternidad Nuestra Senora de Altagracia, Santo Domingo, Dominican Republic
| | - Xavier Saez-Llorens
- Hospital del Niño Dr. José Renán Esquivel, Sistema Nacional de Investigación at SENACYT, Centro de Vacunación Internacional (Cevaxin), Panama City, Panama
| | - Chukiat Sirivichayakul
- Department of Tropical Pediatrics, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
| | - Delia Yu
- Pediatrics, De La Salle Medical and Health Sciences Institute, Dasmariñas, Philippines
| | | | - Kelley J Moss
- Takeda Vaccines, Inc., Cambridge, Massachusetts, USA
| | | | - Vianney Tricou
- Takeda Pharmaceuticals International AG, Zurich, Switzerland
| | - Yuan Zhao
- Takeda Vaccines, Inc., Cambridge, Massachusetts, USA
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Troupin C, Intavong K, Somlor S, Viengphouthong S, Keosenhom S, Chindavong TA, Bounmany P, Vachouaxiong L, Xaybounsou T, Vanhnollat C, Khattignavong P, Phonekeo D, Khamphaphongphane B, Xangsayarath P, Lacoste V, Buchy P, Wong G. Molecular Epidemiology of Dengue Viruses in Lao People's Democratic Republic, 2020-2023. Microorganisms 2025; 13:318. [PMID: 40005687 PMCID: PMC11857872 DOI: 10.3390/microorganisms13020318] [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: 12/31/2024] [Revised: 01/17/2025] [Accepted: 01/18/2025] [Indexed: 02/27/2025] Open
Abstract
Dengue fever is a widespread mosquito-borne viral disease caused by infections with dengue virus (DENV). Since its initial detection in 1979, the disease has posed a significant public health threat to the Lao People's Democratic Republic (Lao PDR). Surveillance is crucial for understanding the circulation of DENV in endemic regions and identifying potential hot spots with higher-than-expected case numbers of dengue fever. In this study, we present the results from our surveillance activities in the Lao PDR spanning 2020-2023. While quarantine restrictions from the COVID-19 pandemic posed substantial disruptions to performing DENV surveillance, over 8800 samples were tested during this period, with a positive rate of close to 60%. Cases were reported from all three regions (northern, Central, and southern) of the Lao PDR. Three circulating serotypes (DENV-1, DENV-2, and DENV-4) were detected, with DENV-1 dominant in 2021 and 2022, while DENV-2 was dominant in 2020 and 2023. Phylogenetic analyses suggest that the genotypes of DENV-1, DENV-2, and DENV-4 were closely related to corresponding isolates from neighboring countries. These findings provide an update on the nature of DENV cases detected in the Lao PDR and underscore the critical importance of sustaining a robust surveillance network to track infections.
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Affiliation(s)
- Cécile Troupin
- Virology Laboratory, Institut Pasteur du Laos, Vientiane 01030, Laos; (C.T.); (K.I.); (S.S.); (S.V.); (S.K.); (T.A.C.); (P.B.); (L.V.); (T.X.); (C.V.); (V.L.)
| | - Kedkeo Intavong
- Virology Laboratory, Institut Pasteur du Laos, Vientiane 01030, Laos; (C.T.); (K.I.); (S.S.); (S.V.); (S.K.); (T.A.C.); (P.B.); (L.V.); (T.X.); (C.V.); (V.L.)
| | - Somphavanh Somlor
- Virology Laboratory, Institut Pasteur du Laos, Vientiane 01030, Laos; (C.T.); (K.I.); (S.S.); (S.V.); (S.K.); (T.A.C.); (P.B.); (L.V.); (T.X.); (C.V.); (V.L.)
| | - Souksakhone Viengphouthong
- Virology Laboratory, Institut Pasteur du Laos, Vientiane 01030, Laos; (C.T.); (K.I.); (S.S.); (S.V.); (S.K.); (T.A.C.); (P.B.); (L.V.); (T.X.); (C.V.); (V.L.)
| | - Sitsana Keosenhom
- Virology Laboratory, Institut Pasteur du Laos, Vientiane 01030, Laos; (C.T.); (K.I.); (S.S.); (S.V.); (S.K.); (T.A.C.); (P.B.); (L.V.); (T.X.); (C.V.); (V.L.)
| | - Thep Aksone Chindavong
- Virology Laboratory, Institut Pasteur du Laos, Vientiane 01030, Laos; (C.T.); (K.I.); (S.S.); (S.V.); (S.K.); (T.A.C.); (P.B.); (L.V.); (T.X.); (C.V.); (V.L.)
| | - Phaithong Bounmany
- Virology Laboratory, Institut Pasteur du Laos, Vientiane 01030, Laos; (C.T.); (K.I.); (S.S.); (S.V.); (S.K.); (T.A.C.); (P.B.); (L.V.); (T.X.); (C.V.); (V.L.)
| | - Longthor Vachouaxiong
- Virology Laboratory, Institut Pasteur du Laos, Vientiane 01030, Laos; (C.T.); (K.I.); (S.S.); (S.V.); (S.K.); (T.A.C.); (P.B.); (L.V.); (T.X.); (C.V.); (V.L.)
| | - Thonglakhone Xaybounsou
- Virology Laboratory, Institut Pasteur du Laos, Vientiane 01030, Laos; (C.T.); (K.I.); (S.S.); (S.V.); (S.K.); (T.A.C.); (P.B.); (L.V.); (T.X.); (C.V.); (V.L.)
| | - Chittaphone Vanhnollat
- Virology Laboratory, Institut Pasteur du Laos, Vientiane 01030, Laos; (C.T.); (K.I.); (S.S.); (S.V.); (S.K.); (T.A.C.); (P.B.); (L.V.); (T.X.); (C.V.); (V.L.)
| | | | - Darouny Phonekeo
- Administration Department, Institut Pasteur du Laos, Vientiane 01030, Laos;
| | | | | | - Vincent Lacoste
- Virology Laboratory, Institut Pasteur du Laos, Vientiane 01030, Laos; (C.T.); (K.I.); (S.S.); (S.V.); (S.K.); (T.A.C.); (P.B.); (L.V.); (T.X.); (C.V.); (V.L.)
| | - Philippe Buchy
- Administration Department, Institut Pasteur du Laos, Vientiane 01030, Laos;
| | - Gary Wong
- Virology Laboratory, Institut Pasteur du Laos, Vientiane 01030, Laos; (C.T.); (K.I.); (S.S.); (S.V.); (S.K.); (T.A.C.); (P.B.); (L.V.); (T.X.); (C.V.); (V.L.)
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Suwanbamrung C, Mehraj SK, Kercho MW, Stanikzai MH, Ageru TA, Jaroenpool J, Pibul P, Shohaimi S, Israel E. Evaluation of high school-based dengue solution model in Southern Thailand: a community participatory action research. BMC Public Health 2024; 24:3315. [PMID: 39609747 PMCID: PMC11603923 DOI: 10.1186/s12889-024-20767-4] [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: 08/04/2024] [Accepted: 11/15/2024] [Indexed: 11/30/2024] Open
Abstract
INTRODUCTION By the time the globe started to tackle the COVID-19 pandemic, Southeast Asian countries had faced an increased dengue incidence, which has eventually become an important public health problem. However, effective and sustainable disease control measures in the area are still lacking. Therefore, the current study is aimed to evaluate the development and implementation of high school-based dengue solution model in Southern Thailand. METHODS Integrated community participatory action research (CPAR) was employed using preparation, planning, implementation, and evaluation. Data was collected using quantitative and qualitative methods from high school students. Descriptive statistics such as frequency and percentage, chi-square and fisher's exact test were used to summarize and compare quantitative data before and after intervention. Similarly, qualitative data was collected through interviews and focus group discussion (FGD) and then analyzed through thematic analysis. RESULTS Two hundred and thirty-nine (96.3%, n = 239/248) and 232 (93.5, n = 232/248) participants were included in the interventions before and after, respectively. School-based dengue prevention was developed with input from a variety of stakeholders, including students, community leaders, health educators, district officials, and community health volunteers. As demonstrated by pre- to post-test results, students understanding of dengue and the larval indices surveillance system has increased. Students who received the training were not only inspired but created a sense of community responsibility with a high commitment to teaching and sharing information in their circle to enhance overall community wellbeing. Being female and higher educational attainment was associated with students understanding of dengue and larval indices surveillance. CONCLUSION This participatory action research not only improved students' understanding of dengue but also empowered them to be proactive in various community health initiatives. The positive correlation between educational attainment and students understanding of dengue solution and larval indices surveillance underscores the need for tailored educational interventions that address diverse learning needs within the community. Collaborative efforts to establish dengue health information center based at primary schools and above can better improve reduction of dengue incidence.
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Affiliation(s)
- Charuai Suwanbamrung
- Public Health Research, School of Public Health, Walailak University, Nakhon Si Thammarat, 80160, Thailand
- Excellent Center for Dengue and Community Public Health: EC for DACH, Walailak University, Nakhon Si Thammarat, Thailand
| | - Sandeep Kumar Mehraj
- Public Health Research, School of Public Health, Walailak University, Nakhon Si Thammarat, 80160, Thailand
- Excellent Center for Dengue and Community Public Health: EC for DACH, Walailak University, Nakhon Si Thammarat, Thailand
| | - Melkamu Worku Kercho
- Public Health Research, School of Public Health, Walailak University, Nakhon Si Thammarat, 80160, Thailand
- Excellent Center for Dengue and Community Public Health: EC for DACH, Walailak University, Nakhon Si Thammarat, Thailand
| | | | - Temesgen Anjulo Ageru
- Public Health Research, School of Public Health, Walailak University, Nakhon Si Thammarat, 80160, Thailand
- Excellent Center for Dengue and Community Public Health: EC for DACH, Walailak University, Nakhon Si Thammarat, Thailand
| | - Jiraporn Jaroenpool
- School of Allied Health Sciences, Walailak University, Nakhon Si Thammarat, 80160, Thailand
- Excellent Center for Dengue and Community Public Health: EC for DACH, Walailak University, Nakhon Si Thammarat, Thailand
| | - Panatda Pibul
- School of Public Health, Walailak University, Nakhon Si Thammarat, 80160, Thailand
| | - Shamarina Shohaimi
- Department of Biology, Faculty of Science, University Putra Malaysia, Selangor, 43400, Malaysia
| | - Eskinder Israel
- School of Public Health, College of Health Science and Medicine, Wolaita Sodo University, Wolaita Sodo, 130, Ethiopia.
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Selvavinayagam ST, Sankar S, Yong YK, Anshad AR, Chandramathi S, Somasundaram A, Palani S, Kumarasamy P, Azhaguvel R, Kumar AB, Subramaniam S, Malathi M, Vijayalakshmi V, Rajeshkumar M, Kumaresan A, Pandey RP, Muruganandam N, Gopalan N, Kannan M, Murugesan A, Balakrishnan P, Byrareddy SN, Dash AP, Velu V, Larsson M, Shankar EM, Raju S. Attrition in serum anti-DENV antibodies correlates with high anti-SARS-CoV-2 IgG levels and low DENV positivity in mosquito vectors-Findings from a state-wide cluster-randomized community-based study in Tamil Nadu, India. PLOS GLOBAL PUBLIC HEALTH 2024; 4:e0003608. [PMID: 39570962 PMCID: PMC11581277 DOI: 10.1371/journal.pgph.0003608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/14/2024] [Accepted: 11/01/2024] [Indexed: 11/24/2024]
Abstract
The decline in dengue incidence and/or prevalence during the COVID-19 pandemic (2020-22) appears to be attributed to reduced treatment-seeking rates, under-reporting, misdiagnosis, disrupted health services and reduced exposure to mosquito vectors due to prevailing lockdowns. There is limited scientific data on dengue virus (DENV) disease during the COVID-19 pandemic. Here, we conducted a community-based, cross-sectional, cluster-randomized survey to assess anti-DENV and anti-SARS-CoV-2 seroprevalence, and also estimated the spatial distribution of DENV-positive aedine mosquito vectors during the COVID-19 pandemic across all the 38 districts of Tamil Nadu, India. Using real-time PCR, the prevalence of DENV in mosquito pools during 2021 was analyzed and compared with the previous and following years of vector surveillance, and correlated with anti-DENV IgM and IgG levels in the population. Results implicate that both anti-DENV IgM and IgG seroprevalence and DENV positivity in mosquito pools were reduced across all the districts. A total of 13464 mosquito pools and 5577 human serum samples from 186 clusters were collected. Of these, 3.76% of the mosquito pools were positive for DENV. In the human sera, 4.12% were positive for anti-DENV IgM and 6.4% for anti-DENV IgG. While the anti-SARS-CoV-2 levels significantly correlated with overall DENV seropositivity, COVID-19 vaccination status significantly correlated with anti-DENV IgM levels. The study indicates a profound impact of anti-SARS-CoV-2 levels on DENV-positive mosquito pools and seropositivity. Continuous monitoring of anti-DENV antibody levels, especially with the evolving variants of SARS-CoV-2 and the surge in COVID-19 cases will shed light on the distribution, transmission and therapeutic attributes of DENV infection.
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Affiliation(s)
- Sivaprakasam T. Selvavinayagam
- State Public Health Laboratory, Directorate of Public Health and Preventive Medicine, DMS Campus, Teynampet, Chennai, Tamil Nadu, India
| | - Sathish Sankar
- Department of Microbiology, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Centre for Infectious Diseases, Saveetha University, Chennai, Tamil Nadu, India
| | - Yean K. Yong
- Laboratory Centre, Xiamen University Malaysia, Sepang, Selangor, Malaysia
| | - Abdul R. Anshad
- Department of Biotechnology, Infection and Inflammation, Central University of Tamil Nadu, Thiruvarur, India
| | - Samudi Chandramathi
- Faculty of Medicine, Department of Medical Microbiology, University of Malaya, Lembah Pantai, Kuala Lumpur, Malaysia
| | | | - Sampath Palani
- State Public Health Laboratory, Directorate of Public Health and Preventive Medicine, DMS Campus, Teynampet, Chennai, Tamil Nadu, India
| | - Parthipan Kumarasamy
- State Public Health Laboratory, Directorate of Public Health and Preventive Medicine, DMS Campus, Teynampet, Chennai, Tamil Nadu, India
| | - Roshini Azhaguvel
- State Public Health Laboratory, Directorate of Public Health and Preventive Medicine, DMS Campus, Teynampet, Chennai, Tamil Nadu, India
| | - Ajith B. Kumar
- State Public Health Laboratory, Directorate of Public Health and Preventive Medicine, DMS Campus, Teynampet, Chennai, Tamil Nadu, India
| | | | - Manickam Malathi
- Institute of Vector Control and Zoonoses, Hosur, Tamil Nadu, India
| | | | - Manivannan Rajeshkumar
- State Public Health Laboratory, Directorate of Public Health and Preventive Medicine, DMS Campus, Teynampet, Chennai, Tamil Nadu, India
| | - Anandhazhvar Kumaresan
- State Public Health Laboratory, Directorate of Public Health and Preventive Medicine, DMS Campus, Teynampet, Chennai, Tamil Nadu, India
| | - Ramendra P. Pandey
- School of Health Sciences and Technology, UPES, Dehradun, Uttarakhand, India
| | - Nagarajan Muruganandam
- Regional Medical Research Centre, Indian Council of Medical Research, Port Blair, Andaman and Nicobar Islands, India
| | - Natarajan Gopalan
- Department of Epidemiology and Public Health, Central University of Tamil Nadu, Thiruvarur, India
| | - Meganathan Kannan
- Department of Biotechnology, Blood and Vascular Biology, Central University of Tamil Nadu, Thiruvarur, India
| | - Amudhan Murugesan
- Department of Microbiology, Government Theni Medical College and Hospital, Theni, Tamil Nadu, India
| | - Pachamuthu Balakrishnan
- Saveetha Institute of Medical and Technical Sciences, Center for Infectious Diseases, Saveetha Medical College and Hospital, Saveetha University, Chennai, Tamil Nadu, India
| | - Siddappa N. Byrareddy
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, Nebraska, United States of America
| | - Aditya P. Dash
- Asian Institute of Public Health University, Bhubaneswar, Odisha, India
| | - Vijayakumar Velu
- Department of Pathology and Laboratory Medicine, Division of Microbiology and Immunology, Emory University School of Medicine, Emory National Primate Research Center, Emory Vaccine Center, Atlanta, Georgia, United States of America
| | - Marie Larsson
- Department of Biomedical and Clinical Sciences, Division of Molecular Medicine and Virology, Linköping University, Linköping, Sweden
| | - Esaki M. Shankar
- Department of Biotechnology, Infection and Inflammation, Central University of Tamil Nadu, Thiruvarur, India
| | - Sivadoss Raju
- State Public Health Laboratory, Directorate of Public Health and Preventive Medicine, DMS Campus, Teynampet, Chennai, Tamil Nadu, India
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Santos TMIL, Versiani AF, Campos GRF, Moraes MM, Parra MCP, Mistrao NFB, Negri AF, Bagno FF, Galves MG, Moreno CM, Da Fonseca FG, Estofolete CF, Vasilakis N, Nogueira ML. Dengue and SARS-CoV-2 co-circulation and overlapping infections in hospitalized patients. Front Cell Infect Microbiol 2024; 14:1429309. [PMID: 39583156 PMCID: PMC11582011 DOI: 10.3389/fcimb.2024.1429309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2024] [Accepted: 10/14/2024] [Indexed: 11/26/2024] Open
Abstract
Since its emergence in 2019, coronavirus disease (COVID-19) has spread worldwide and consumed public health resources. However, the world still has to address the burdens of other infectious diseases that continue to thrive. Countries in the tropics and neotropics, including Brazil, are affected by annual, cyclic dengue epidemics. Little is known about the impact of subsequent infections between DENV and SARS-CoV-2. Our study was performed on 400 serum samples collected from laboratory-confirmed COVID-19 patients between January and June 2021, months historically known for DENV outbreaks in Brazil. The samples were tested by serology and molecular assays for the presence of DENV and other arboviruses. While no DENV PCR results were detected, 6% were DENV IgM-positive, and 0.25% were DENV NS1-positive according to ELISA. IgM antibodies were isolated by chromatography, and 62.5% of the samples were positive for neutralizing antibodies (FRNT80) against DENV IgM, suggesting a recent infection. We also observed increased IL-10, TNF-α, and IL-1β levels in patients with overlapping SARS-CoV-2/DENV infections. Intriguingly, diabetes was the only relevant comorbidity (p=0.046). High rates of hospitalization (94.9%) and mortality (50%) were found, with a significant increase in invasive mechanical ventilatory support (86.96%) in SARS-CoV-2/DENV- infected patients, suggesting an impact on patient clinical outcomes. When analyzing previous exposure to DENV, secondary dengue patients infected with SARS-CoV-2 more frequently presented with dyspnea and respiratory distress, longer hospital and intensive care unit (ICU) stays (4 and 20.29 days, respectively) and a higher mortality rate (60%). However, a greater proportion of patients with primary DENV infection had fever and cough than patients with secondary dengue (87.50% vs. 33.33%, p=0.027 for fever). Our data demonstrate that differentiating between the two diseases is a great concern for tropical countries and should be explored to improve patient management.
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Affiliation(s)
- Thayza M. I. L. Santos
- Laboratório de Pesquisa em Virologia, Departamento de Doenças Infecciosas e Parasitárias, Faculdade de Medicina de São José do Rio Preto, São José do Rio Preto, Brazil
| | - Alice F. Versiani
- Department of Pathology, University of Texas Medical Branch, Galveston, TX, United States
| | - Guilherme R. F. Campos
- Laboratório de Pesquisa em Virologia, Departamento de Doenças Infecciosas e Parasitárias, Faculdade de Medicina de São José do Rio Preto, São José do Rio Preto, Brazil
| | - Marilia M. Moraes
- Laboratório de Pesquisa em Virologia, Departamento de Doenças Infecciosas e Parasitárias, Faculdade de Medicina de São José do Rio Preto, São José do Rio Preto, Brazil
| | - Maisa C. P. Parra
- Laboratório de Pesquisa em Virologia, Departamento de Doenças Infecciosas e Parasitárias, Faculdade de Medicina de São José do Rio Preto, São José do Rio Preto, Brazil
| | - Natalia F. B. Mistrao
- Laboratório de Pesquisa em Virologia, Departamento de Doenças Infecciosas e Parasitárias, Faculdade de Medicina de São José do Rio Preto, São José do Rio Preto, Brazil
| | - Andreia F. Negri
- Laboratório de Pesquisa em Virologia, Departamento de Doenças Infecciosas e Parasitárias, Faculdade de Medicina de São José do Rio Preto, São José do Rio Preto, Brazil
- Prefeitura de São José do Rio Preto, Vigilância Epidemiológica, São José do Rio Preto, Brazil
| | - Flavia F. Bagno
- Centro de Tecnologia em Vacinas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Marina G. Galves
- Laboratório de Pesquisa em Virologia, Departamento de Doenças Infecciosas e Parasitárias, Faculdade de Medicina de São José do Rio Preto, São José do Rio Preto, Brazil
| | - Camila M. Moreno
- Laboratório de Pesquisa em Virologia, Departamento de Doenças Infecciosas e Parasitárias, Faculdade de Medicina de São José do Rio Preto, São José do Rio Preto, Brazil
| | - Flavio G. Da Fonseca
- Centro de Tecnologia em Vacinas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
- Laboratorio de Virologia Basica e Aplicada, Departamento de Microbiologia, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Cassia F. Estofolete
- Laboratório de Pesquisa em Virologia, Departamento de Doenças Infecciosas e Parasitárias, Faculdade de Medicina de São José do Rio Preto, São José do Rio Preto, Brazil
| | - Nikos Vasilakis
- Department of Pathology, University of Texas Medical Branch, Galveston, TX, United States
- Center for Vector-Borne and Zoonotic Diseases, University of Texas Medical Branch, Galveston, TX, United States
- Institute for Human Infections and Immunity, University of Texas Medical Branch, Galveston, TX, United States
| | - Mauricio L. Nogueira
- Laboratório de Pesquisa em Virologia, Departamento de Doenças Infecciosas e Parasitárias, Faculdade de Medicina de São José do Rio Preto, São José do Rio Preto, Brazil
- Department of Pathology, University of Texas Medical Branch, Galveston, TX, United States
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Goei AHY, Goh LH, Lim SM. Shifts in communicable disease trends since the COVID-19 pandemic: a descriptive analysis using Singapore data. Singapore Med J 2024:00077293-990000000-00152. [PMID: 39320135 DOI: 10.4103/singaporemedj.smj-2023-110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Accepted: 02/19/2024] [Indexed: 09/26/2024]
Affiliation(s)
- Anne Hui Yi Goei
- National Preventive Medicine Residency, National University Health System, Singapore
| | - Lay Hoon Goh
- Department of Family Medicine, National University Health System, Singapore
| | - See Ming Lim
- Department of Occupational Medicine, National University Health System, Singapore
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Chareonviriyaphap T, Ngoen-Klan R, Ahebwa A, Nararak J, Saeung M, Macdonald M, Panthawong A, Sukkanon C, Nakasathien S. Report of the 2023 Asia Pacific Conference on Mosquito and Vector Control: "reimagining vector control-innovations for a changed world". Malar J 2024; 23:247. [PMID: 39154186 PMCID: PMC11330594 DOI: 10.1186/s12936-024-05062-2] [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: 04/17/2024] [Accepted: 07/27/2024] [Indexed: 08/19/2024] Open
Abstract
The Asia-Pacific region has had decades of progress in reducing malaria cases and deaths. The region is now accelerating its efforts towards malaria elimination by 2030 using a science-based approach by applying evidence-based best practices alongside existing tools. However, there are concerns of knowledge gaps and external factors challenging this goal. The COVID-19 pandemic served as reminder of the need for a holistic approach. This report summarizes the outcomes of the discussions from the "Asia Pacific Conference on Mosquito and Vector Control" held in Chiang Mai, Thailand from 27 to 30 November, 2023. The conference aims to provide insights into recent research, cutting-edge tools, and the strength of the Asia-Pacific regional mosquito and vector control capacity post-COVID-19 pandemic era. The conference featured discussions on mosquito surveillance, monitoring and control; enabling the resolution of local problems with local expertise and forging new partnerships; and exploring recent research advancements in vector control strategies. More than 500 experts from 55 countries attended.
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Affiliation(s)
- Theeraphap Chareonviriyaphap
- Department of Entomology, Faculty of Agriculture, Kasetsart University, Bangkok, 10900, Thailand.
- Research and Lifelong Learning Center for Urban and Environmental Entomology, Kasetsart University, Bangkok, Thailand.
| | - Ratchadawan Ngoen-Klan
- Department of Entomology, Faculty of Agriculture, Kasetsart University, Bangkok, 10900, Thailand
- Research and Lifelong Learning Center for Urban and Environmental Entomology, Kasetsart University, Bangkok, Thailand
| | - Alex Ahebwa
- Department of Entomology, Faculty of Agriculture, Kasetsart University, Bangkok, 10900, Thailand
- Research and Lifelong Learning Center for Urban and Environmental Entomology, Kasetsart University, Bangkok, Thailand
| | - Jirod Nararak
- Department of Entomology, Faculty of Agriculture, Kasetsart University, Bangkok, 10900, Thailand
- Research and Lifelong Learning Center for Urban and Environmental Entomology, Kasetsart University, Bangkok, Thailand
| | - Manop Saeung
- Department of Entomology, Faculty of Agriculture, Kasetsart University, Bangkok, 10900, Thailand
- Research and Lifelong Learning Center for Urban and Environmental Entomology, Kasetsart University, Bangkok, Thailand
| | - Michael Macdonald
- Innovative Vector Control Consortium IVCC Pembroke Place, Liverpool, L3 5QA, UK
| | - Amonrat Panthawong
- Department of Entomology, Faculty of Agriculture, Kasetsart University, Bangkok, 10900, Thailand
- Research and Lifelong Learning Center for Urban and Environmental Entomology, Kasetsart University, Bangkok, Thailand
| | - Chutipong Sukkanon
- Department of Clinical Microscopy, Faculty of Medical Technology, Mahidol University, Bangkok, 10400, Thailand
| | - Sutkhet Nakasathien
- Department of Agronomy, Faculty of Agriculture, Kasetsart University, Bangkok, 10900, Thailand
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Tang N, Lim JT, Dickens B, Chiew C, Ng LC, Chia PY, Leo YS, Lye DC, Tan KB, Wee LE. Effects of Recent Prior Dengue Infection on Risk and Severity of Subsequent SARS-CoV-2 Infection: A Retrospective Cohort Study. Open Forum Infect Dis 2024; 11:ofae397. [PMID: 39091642 PMCID: PMC11293429 DOI: 10.1093/ofid/ofae397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2024] [Accepted: 07/10/2024] [Indexed: 08/04/2024] Open
Abstract
Background and Aims Elucidating whether prior dengue potentially confers cross-protection against COVID-19 is of public health importance in tropical countries at risk of overlapping dengue and COVID-19 epidemics. However, studies to date have yielded conflicting results. We aimed to assess effects of recent prior dengue infection on risk and severity of subsequent SARS-CoV-2 infection among adult Singaporeans. Methods A retrospective cohort study including all adult Singaporeans aged ≥18 years was conducted from 1 July 2021 through 31 October 2022, when a dengue outbreak driven by the DENV3 serotype preceded subsequent waves of SARS-CoV-2 Delta/Omicron transmission in Singapore. SARS-CoV-2 and dengue infection status were classified using national registries. Cox regression models adjusted for demographics, COVID-19 vaccination status, comorbidity, and socioeconomic-status were used to assess risks and severity (hospitalization, severe illness) of SARS-CoV-2 infection occurring after previous recorded dengue infection. Results A total of 3 366 399 individuals were included, contributing 1 399 696 530 person-days of observation. A total of 13 434 dengue infections and 1 253 520 subsequent SARS-CoV-2 infections were recorded; with an average of 94.7 days (standard deviation = 83.8) between dengue infection and SARS-CoV-2 infection. Preceding dengue infection was associated with a modest increase in risk of subsequent SARS-CoV-2 infection (adjusted hazards ratio [aHR] = 1.13; 95% confidence interval [CI], 1.08-1.17), and significantly elevated risk of subsequent COVID-19 hospitalization (aHR = 3.25; 95% CI, 2.78-3.82) and severe COVID-19 (aHR = 3.39; 95% CI, 2.29-5.03). Conclusions Increased risk of SARS-CoV-2 infection and adverse COVID-19 outcomes were observed following preceding dengue infection in a national population-based cohort of adult Singaporeans. This observation is of significance in tropical countries with overlapping dengue and COVID-19 outbreaks.
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Affiliation(s)
- Nicole Tang
- National Centre for Infectious Diseases, Singapore, Singapore
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Jue Tao Lim
- National Centre for Infectious Diseases, Singapore, Singapore
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, Singapore
| | - Borame Dickens
- Saw Swee Hock School of Public Health, National University of Singapore, Singapore, Singapore
| | - Calvin Chiew
- National Centre for Infectious Diseases, Singapore, Singapore
- Ministry of Health, Singapore, Singapore
| | - Lee Ching Ng
- Saw Swee Hock School of Public Health, National University of Singapore, Singapore, Singapore
- Environmental Health Institute, National Environment Agency, Singapore, Singapore
| | - Po Ying Chia
- National Centre for Infectious Diseases, Singapore, Singapore
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, Singapore
- Department of Infectious Diseases, Tan Tock Seng Hospital, Singapore, Singapore
| | - Yee Sin Leo
- National Centre for Infectious Diseases, Singapore, Singapore
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, Singapore
- Saw Swee Hock School of Public Health, National University of Singapore, Singapore, Singapore
- Department of Infectious Diseases, Tan Tock Seng Hospital, Singapore, Singapore
| | - David Chien Lye
- National Centre for Infectious Diseases, Singapore, Singapore
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, Singapore
- Department of Infectious Diseases, Tan Tock Seng Hospital, Singapore, Singapore
| | - Kelvin Bryan Tan
- National Centre for Infectious Diseases, Singapore, Singapore
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, Singapore
- Saw Swee Hock School of Public Health, National University of Singapore, Singapore, Singapore
- Ministry of Health, Singapore, Singapore
- Duke-NUS Graduate Medical School, National University of Singapore, Singapore, Singapore
| | - Liang En Wee
- National Centre for Infectious Diseases, Singapore, Singapore
- Duke-NUS Graduate Medical School, National University of Singapore, Singapore, Singapore
- Department of Infectious Diseases, Singapore General Hospital, Singapore, Singapore
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Sun Y, He L, Li X, Li C, Yan S, Zhang Y, Sun Z. Unraveling the Genomic Evolution of Dengue Virus Serotype 1: A Case Study from Yantai, China. Life (Basel) 2024; 14:808. [PMID: 39063563 PMCID: PMC11278097 DOI: 10.3390/life14070808] [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: 04/27/2024] [Revised: 06/12/2024] [Accepted: 06/20/2024] [Indexed: 07/28/2024] Open
Abstract
In August 2023, we identified a case of dengue fever in Yantai City, which was imported from Xishuangbanna, China. To investigate its evolutionary history and population dynamics, we utilized the metatranscriptomic method to obtain the virus' whole genome sequence. Together with 367 selected dengue virus whole genome sequences from the NCBI database, we constructed a time-scaled Maximum Clade Credibility (MCC) tree. We found that our sequence exhibited a high homology with a sequence of DENV1 (OR418422.1) uploaded by the Guangzhou Center for Disease Control and Prevention in 2023, with an estimated divergence time around 2019 (95% HPD: 2017-2023), coinciding with the emergence of SARS-CoV-2. The DENV strain obtained in this study belongs to genotype I of DENV1. Its ancestors experienced a global epidemic around 2005 (95% HPD: 2002-2010), and its progeny strains have spread extensively in Southeast Asia and China since around 2007 (95% HPD: 2006-2011). The Bayesian skyline plot indicates that the current population of DENV1 has not been affected by SARS-CoV-2 and is expected to maintain stable transmission. Hence, it is imperative to track and monitor its epidemiological trends and genomic variations to prevent potential large-scale outbreaks in the post-SARS-CoV-2 era.
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Affiliation(s)
| | | | | | | | | | - Yi Zhang
- Yantai Center for Disease Control and Prevention, Yantai 264003, China; (Y.S.); (L.H.)
| | - Zhenlu Sun
- Yantai Center for Disease Control and Prevention, Yantai 264003, China; (Y.S.); (L.H.)
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Selvavinayagam ST, Sankar S, Yong YK, Anshad AR, Chandramathi S, Somasundaram A, Palani S, Kumarasamy P, Azhaguvel R, Kumar AB, Subramaniam S, Malathi M, Vijayalakshmi V, Rajeshkumar M, Kumaresan A, Pandey RP, Muruganandam N, Gopalan N, Kannan M, Murugesan A, Balakrishnan P, Byrareddy SN, Dash AP, Larsson M, Velu V, Shankar EM, Raju S. Serosurveillance of dengue infection and correlation with mosquito pools for dengue virus positivity during the COVID-19 pandemic in Tamil Nadu, India - A state-wide cross-sectional cluster randomized community-based study. MEDRXIV : THE PREPRINT SERVER FOR HEALTH SCIENCES 2024:2024.06.07.24308595. [PMID: 38883728 PMCID: PMC11178022 DOI: 10.1101/2024.06.07.24308595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/18/2024]
Abstract
Background Dengue is a vector-borne viral disease impacting millions across the globe. Nevertheless, akin to many other diseases, reports indicated a decline in dengue incidence and seroprevalence during the COVID-19 pandemic (2020-22). This presumably could be attributed to reduced treatment-seeking rates, under-reporting, misdiagnosis, disrupted health services and reduced exposure to vectors due to lockdowns. Scientific evidence on dengue virus (DENV) disease during the COVID-19 pandemic is limited globally. Methods A cross-sectional, randomized cluster sampling community-based survey was carried out to assess anti-dengue IgM and IgG and SARS-CoV-2 IgG seroprevalence across all 38 districts of Tamil Nadu, India. The prevalence of DENV in the Aedes mosquito pools during 2021 was analyzed and compared with previous and following years of vector surveillance for DENV by real-time PCR. Findings Results implicate that both DENV-IgM and IgG seroprevalence and mosquito viral positivity were reduced across all the districts. A total of 13464 mosquito pools and 5577 human serum samples from 186 clusters were collected. Of these, 3·76% of mosquito pools were positive for DENV. In the human sera, 4·12% were positive for DENV IgM and 6·4% were positive for DENV IgG. The anti-SARS-CoV-2 antibody titres correlated with dengue seropositivity with a significant association whereas vaccination status significantly correlated with dengue IgM levels. Interpretation Continuous monitoring of DENV seroprevalence, especially with the evolving variants of the SARS-CoV-2 virus and surge in COVID-19 cases will shed light on the transmission and therapeutic attributes of dengue infection.
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Affiliation(s)
- Sivaprakasam T. Selvavinayagam
- State Public Health Laboratory, Directorate of Public Health and Preventive Medicine, DMS Campus, Teynampet 600 018, Chennai, Tamil Nadu, India
| | - Sathish Sankar
- Centre for Infectious Diseases, Department of Microbiology, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai 600077, Tamil Nadu, India
| | - Yean K. Yong
- Laboratory Centre, Xiamen University Malaysia, 43900 Sepang, Selangor, Malaysia
| | - Abdul R. Anshad
- Infection and Inflammation, Department of Biotechnology, Central University of Tamil Nadu, Thiruvarur 610 005, India
| | - Samudi Chandramathi
- Department of Medical Microbiology, Faculty of Medicine, University of Malaya, Lembah Pantai, Kuala Lumpur, Malaysia
| | | | - Sampath Palani
- State Public Health Laboratory, Directorate of Public Health and Preventive Medicine, DMS Campus, Teynampet 600 018, Chennai, Tamil Nadu, India
| | - Parthipan Kumarasamy
- State Public Health Laboratory, Directorate of Public Health and Preventive Medicine, DMS Campus, Teynampet 600 018, Chennai, Tamil Nadu, India
| | - Roshini Azhaguvel
- State Public Health Laboratory, Directorate of Public Health and Preventive Medicine, DMS Campus, Teynampet 600 018, Chennai, Tamil Nadu, India
| | - Ajith B. Kumar
- State Public Health Laboratory, Directorate of Public Health and Preventive Medicine, DMS Campus, Teynampet 600 018, Chennai, Tamil Nadu, India
| | | | - Manickam Malathi
- Institute of Vector Control and Zoonoses, Hosur, 635126, Tamil Nadu
| | | | - Manivannan Rajeshkumar
- State Public Health Laboratory, Directorate of Public Health and Preventive Medicine, DMS Campus, Teynampet 600 018, Chennai, Tamil Nadu, India
| | - Anandhazhvar Kumaresan
- State Public Health Laboratory, Directorate of Public Health and Preventive Medicine, DMS Campus, Teynampet 600 018, Chennai, Tamil Nadu, India
| | - Ramendra P. Pandey
- School of Health Sciences and Technology, UPES, Dehradun, 248007, Uttarakhand, India
| | - Nagarajan Muruganandam
- Regional Medical Research Centre, Indian Council of Medical Research, Port Blair, Andaman and Nicobar Islands, India
| | - Natarajan Gopalan
- Department of Epidemiology and Public Health, Central University of Tamil Nadu, Thiruvarur 610 005, India
| | - Meganathan Kannan
- Blood and Vascular Biology, Department of Biotechnology, Central University of Tamil Nadu, Thiruvarur 610 005, India
| | - Amudhan Murugesan
- Department of Microbiology, Government Theni Medical College and Hospital, Theni, Tamil Nadu, India
| | - Pachamuthu Balakrishnan
- Center for Infectious Diseases, Saveetha Medical College and Hospital, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, Tamil Nadu, India
| | - Siddappa N. Byrareddy
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE 68131, USA
| | - Aditya P. Dash
- Asian Institute of Public Health University, Bhubaneswar, Odisha, India
| | - Marie Larsson
- Division of Molecular Medicine and Virology, Department of Biomedical and Clinical Sciences, Linköping University, 58 185 Linköping, Sweden
| | - Vijayakumar Velu
- Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Division of Microbiology and Immunology, Emory National Primate Research Center, Emory Vaccine Center, Atlanta, GA, 30329, USA
| | - Esaki M. Shankar
- Infection and Inflammation, Department of Biotechnology, Central University of Tamil Nadu, Thiruvarur 610 005, India
| | - Sivadoss Raju
- State Public Health Laboratory, Directorate of Public Health and Preventive Medicine, DMS Campus, Teynampet 600 018, Chennai, Tamil Nadu, India
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Srisawat N, Gubler DJ, Pangestu T, Limothai U, Thisyakorn U, Ismail Z, Goh D, Capeding MR, Bravo L, Yoksan S, Tantawichien T, Hadinegoro SR, Rafiq K, Picot VS, Ooi EE. Proceedings of the 6th Asia Dengue Summit, June 2023. PLoS Negl Trop Dis 2024; 18:e0012060. [PMID: 38551892 PMCID: PMC10980189 DOI: 10.1371/journal.pntd.0012060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/01/2024] Open
Abstract
The 6th Asia Dengue Summit (ADS) themed "Road Map to Zero Dengue Death" was held in Thailand from 15th-16th June 2023. The summit was hosted by Tropical Medicine Cluster, Chulalongkorn University, Bangkok, Thailand in conjunction with Queen Saovabha Memorial Institute, The Thai Red Cross Society; Faculty of Tropical Medicine, Mahidol University; and the Ministry of Public Health. The 6th ADS was convened by Asia Dengue Voice and Action (ADVA); Global Dengue and Aedes Transmitted Diseases Consortium (GDAC); Southeast Asian Ministers of Education Tropical Medicine and Public Health Network (SEAMEO TROPMED); Fondation Mérieux (FMx) and the International Society for Neglected Tropical Diseases (ISNTD). Dengue experts from academia and research, and representatives from the Ministries of Health, Regional and Global World Health Organization (WHO) and International Vaccine Institute (IVI) participated in the three-day summit. With more than 51 speakers and 451 delegates from over 24 countries, 10 symposiums, and 2 full days, the 6th ADS highlighted the growing threat of dengue and its antigenic evolution, flagged the urgent need to overcome vaccine hesitancy and misinformation crisis, and focused on dengue control policies, newer diagnostics, therapeutics and vaccines, travel-associated dengue, and strategies to improve community involvement.
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Affiliation(s)
- Nattachai Srisawat
- Tropical Medicine Cluster, Center of Excellence in Critical Care Nephrology, Faculty of Medicine, Chulalongkorn University, Excellence Center for Critical Care Nephrology, King Chulalongkorn Memorial Hospital, Thailand
| | - Duane J. Gubler
- Program in Emerging Infectious Diseases, Duke-NUS Medical School, Singapore
| | - Tikki Pangestu
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Umaporn Limothai
- Tropical Medicine Cluster, Center of Excellence in Critical Care Nephrology, Faculty of Medicine, Chulalongkorn University, Excellence Center for Critical Care Nephrology, King Chulalongkorn Memorial Hospital, Thailand
| | - Usa Thisyakorn
- Tropical Medicine Cluster, Chulalongkorn University and Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
| | - Zulkifli Ismail
- Department of Pediatrics, KPJ Selangor Specialist Hospital, Malaysia
| | - Daniel Goh
- Division of Paediatric Pulmonary Medicine and Sleep, Khoo Teck Puat National University Children’s Medical Institute, National University Hospital, Singapore
| | | | - Lulu Bravo
- University of the Philippines Manila, Manila, the Philippines
| | - Sutee Yoksan
- Center for Vaccine Development, Institute of Molecular Biosciences, Mahidol University, Bangkok, Thailand
| | - Terapong Tantawichien
- Division of Infectious Diseases, Department of Medicine and Tropical Medicine Cluster, Chulalongkorn University, Bangkok, Thailand
| | - Sri Rezeki Hadinegoro
- Department of Child Health, Faculty of Medicine Universitas Indonesia, Jakarta, Indonesia
| | - Kamran Rafiq
- International Society of Neglected Tropical Diseases, London, United Kingdom
| | | | - Eng Eong Ooi
- Program in Emerging Infectious Diseases, Duke-NUS Medical School, Singapore
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Shih FY, Lyu SY, Yang CC, Chang YT, Lin CF, Morisky DE. Public Fear and Risk Perception During Dengue Fever Outbreak in Taiwan. Asia Pac J Public Health 2023; 35:502-509. [PMID: 37727955 DOI: 10.1177/10105395231198939] [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] [Indexed: 09/21/2023]
Abstract
This study aimed to understand the public reaction to the 2015 dengue outbreak in Taiwan by determining the key influencing factors. A total of 1104 respondents aged 18 years and over, were recruited by telephone between November 20 and 28, 2015, to investigate fear, risk perception, and psychological distress during the dengue outbreak. Multiple logistic regression analysis showed that fear of dengue was more prevalent in the areas that were most affected, as well as those with infected friends or relatives. Fear was also more pronounced among females and the elderly group, especially in terms of perceived risk of infection, severity of the infection, the uncertain cured rate, the adverse effects on daily life, in which all lead to psychological distress. Fear of dengue fever, perceived risk of dengue infection, and psychological distress associated with the dengue fever pandemic were the main variables investigated in this study. Since media mass can serve as a unified platform for all public health communications, it is recommended that the government utilizes the power of media to deliver pandemic prevention measures. Specifically, health education interventions related to risk communication should focus on the most infected areas while taking gender and age into consideration.
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Affiliation(s)
- Fuh-Yuan Shih
- Department of Emergency Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Shu-Yu Lyu
- Department of Leisure Industry and Health Promotion, National Taipei University of Nursing and Health Sciences, Taipei, Taiwan
| | - Chih-Chien Yang
- Graduate Institute of Educational Information and Measurement, National Taichung University of Education, Taichung, Taiwan
| | - Yao-Tsung Chang
- School of Public Health, Taipei Medical University, Taipei, Taiwan
| | - Ching-Feng Lin
- Taipei Hospital, Ministry of Health and Welfare, New Taipei City, Taiwan
- Department of Health Care Management, National Taipei University of Nursing and Health Sciences, Taipei, Taiwan
- School of Health Care Administration, Taipei Medical University, Taipei, Taiwan
| | - Donald E Morisky
- Department of Community Health Sciences, Fielding School of Public Health, University of California, Los Angeles, CA, USA
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Liu Z, Zhang Q, Li L, He J, Guo J, Wang Z, Huang Y, Xi Z, Yuan F, Li Y, Li T. The effect of temperature on dengue virus transmission by Aedes mosquitoes. Front Cell Infect Microbiol 2023; 13:1242173. [PMID: 37808907 PMCID: PMC10552155 DOI: 10.3389/fcimb.2023.1242173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2023] [Accepted: 09/01/2023] [Indexed: 10/10/2023] Open
Abstract
Dengue is prevalent in tropical and subtropical regions. As an arbovirus disease, it is mainly transmitted by Aedes aegypti and Aedes albopictus. According to the previous studies, temperature is closely related to the survival of Aedes mosquitoes, the proliferation of dengue virus (DENV) and the vector competence of Aedes to transmit DENV. This review describes the correlations between temperature and dengue epidemics, and explores the potential reasons including the distribution and development of Aedes mosquitoes, the structure of DENV, and the vector competence of Aedes mosquitoes. In addition, the immune and metabolic mechanism are discussed on how temperature affects the vector competence of Aedes mosquitoes to transmit DENV.
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Affiliation(s)
- Zhuanzhuan Liu
- Department of Pathogen Biology, Center for Tropical Disease Control and Research, School of Basic Medical Sciences and Life Sciences, Key Laboratory of Tropical Translational Medicine of Ministry of Education, Hainan Medical University, Haikou, China
- Department of Pathogen Biology and Immunology, Jiangsu International Laboratory of Immunity and Metabolism, Jiangsu Key Laboratory of Immunity and Metabolism, Xuzhou Medical University, Xuzhou, China
| | - Qingxin Zhang
- School of Imaging Medical Sciences, Xuzhou Medical University, Xuzhou, China
| | - Liya Li
- School of Imaging Medical Sciences, Xuzhou Medical University, Xuzhou, China
| | - Junjie He
- School of Imaging Medical Sciences, Xuzhou Medical University, Xuzhou, China
| | - Jinyang Guo
- School of Imaging Medical Sciences, Xuzhou Medical University, Xuzhou, China
| | - Zichen Wang
- School of Imaging Medical Sciences, Xuzhou Medical University, Xuzhou, China
| | - Yige Huang
- School of Imaging Medical Sciences, Xuzhou Medical University, Xuzhou, China
| | - Zimeng Xi
- School of Imaging Medical Sciences, Xuzhou Medical University, Xuzhou, China
| | - Fei Yuan
- Department of Pathogen Biology and Immunology, Jiangsu International Laboratory of Immunity and Metabolism, Jiangsu Key Laboratory of Immunity and Metabolism, Xuzhou Medical University, Xuzhou, China
| | - Yiji Li
- Department of Pathogen Biology, Center for Tropical Disease Control and Research, School of Basic Medical Sciences and Life Sciences, Key Laboratory of Tropical Translational Medicine of Ministry of Education, Hainan Medical University, Haikou, China
| | - Tingting Li
- Department of Pathogen Biology, Center for Tropical Disease Control and Research, School of Basic Medical Sciences and Life Sciences, Key Laboratory of Tropical Translational Medicine of Ministry of Education, Hainan Medical University, Haikou, China
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