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Tuñon A, García J, Carrera LC, Chaves LF, Lenhart AE, Loaiza JR. Chemical control of medically important arthropods in Panama: A systematic literature review of historical efforts. Acta Trop 2024; 255:107217. [PMID: 38677361 DOI: 10.1016/j.actatropica.2024.107217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Revised: 03/22/2024] [Accepted: 04/09/2024] [Indexed: 04/29/2024]
Abstract
Vector-borne diseases are a major source of morbidity in Panama. Herein, we describe historical usage patterns of synthetic insecticides to control arthropod disease vectors in this country. We examine the influence of interventions by vector control programs on the emergence of insecticide resistance. Chemical control has traditionally focused on two mosquito species: Anopheles albimanus, a major regional malaria vector, and Aedes aegypti, a historical vector of yellow fever, and current vector of dengue, chikungunya, and Zika. Countrywide populations of An. albimanus depict hyperirritability to organochlorine insecticides administered by indoor residual spraying, although they appear susceptible to these insecticides in bioassays settings, as well as to organophosphate and carbamate insecticides in field tests. Populations of Ae. aegypti show resistance to pyrethroids, particularly in areas near Panama City, but the spread of resistance remains unknown in Ae. aegypti and Aedes albopictus. A One Health approach is needed in Panama to pinpoint the insecticide resistance mechanisms including the frequency of knockdown mutations and behavioral plasticity in populations of Anopheles and Aedes mosquitoes. This information is necessary to guide the sustainable implementation of chemical control strategies and the use of modern vector control technologies such as genetically modified mosquitoes, and endosymbiont Wolbachia-based biological control.
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Affiliation(s)
- Anyi Tuñon
- Programa Centroamericano de Maestría en Entomología, Vicerrectoría de Investigación y Postgrado, Universidad de Panamá, República de Panamá; Instituto Conmemorativo Gorgas de Estudios de la Salud, Ciudad de Panamá, Apartado 0816-02593, Panama
| | - Joel García
- Programa Centroamericano de Maestría en Entomología, Vicerrectoría de Investigación y Postgrado, Universidad de Panamá, República de Panamá; Instituto de Investigaciones Científicas & Servicios de Alta Tecnología, Edificio 219, Clayton, PO 0843-01103, Ciudad del Saber, República de Panamá
| | - Lorenzo Cáceres Carrera
- Instituto Conmemorativo Gorgas de Estudios de la Salud, Ciudad de Panamá, Apartado 0816-02593, Panama
| | - Luis Fernando Chaves
- Department of Environmental and Occupational Health, School of Public Health and Department of Geography, Indiana University, Bloomington, IN, USA
| | - Audrey E Lenhart
- Entomology Branch, Centers for Disease Control and Prevention (CDC), 1600 Clifton Rd, Atlanta, GA, 30329, USA
| | - Jose R Loaiza
- Programa Centroamericano de Maestría en Entomología, Vicerrectoría de Investigación y Postgrado, Universidad de Panamá, República de Panamá; Smithsonian Tropical Research Institute, Panama City, Panama; Instituto de Investigaciones Científicas & Servicios de Alta Tecnología, Edificio 219, Clayton, PO 0843-01103, Ciudad del Saber, República de Panamá.
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Talaga S, Compin A, Azémar F, Leroy C, Dejean A. Urbanization and Water Containers Influence the Mosquito Community with Consequences for Aedes aegypti. Neotrop Entomol 2024; 53:162-170. [PMID: 37882954 DOI: 10.1007/s13744-023-01091-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Accepted: 10/03/2023] [Indexed: 10/27/2023]
Abstract
We aimed to determine how the degree of urbanization in a Neotropical city influences Aedes aegypti (L.), a pantropical vector of urban yellow fever, dengue, Zika and Chikungunia, via other mosquito species, whether they are competitors or predators, native to the area or invasive. We conducted experiments twice a month during one year in the city of Kourou, French Guiana, on three sites characterized by increasing percentages of imperviousness (i.e., 0.65%, 33.80% and 86.60%). These sites were located in a ≈5 ha forest fragment, a residential area with gardens, and in the older part of the city, respectively, and correspond to slightly, moderately and highly urbanized sites. There, we monitored twice a month during one year a total of 108 mosquito communities inhabiting four types of containers (i.e., a tank bromeliad, dry stumps of bamboo, ovitraps and car tires) installed in a random block design. In the tanks of the bromeliad, likely due to the acidity of the water, the immatures of native mosquito species prevailed, particularly Wyeomyia pertinans (Williston) in the slightly urbanized site. The general pattern was very similar in the three other types of containers where Limatus durhamii Théobald dominated in the slightly urbanized site, so that the abundance of Ae. aegypti immatures was low compared to those of native species. Yet, Ae. aegypti strongly dominated in the two more urbanized sites. These findings open up perspectives for vector management, including the conservation and/or the augmentation of natural enemies through modifications to landscape features.
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Affiliation(s)
- Stanislas Talaga
- Vector Control and Adaptation Unit, Vectopôle Amazonien Emile Abonnenc, Institut Pasteur de la Guyane, Cayenne, France
| | - Arthur Compin
- Laboratoire écologie fonctionnelle et environnement, Université de Toulouse, CNRS, 118 route de Narbonne, 31062, Toulouse cedex 9, France
| | - Frédéric Azémar
- Laboratoire écologie fonctionnelle et environnement, Université de Toulouse, CNRS, 118 route de Narbonne, 31062, Toulouse cedex 9, France
| | - Céline Leroy
- AMAP, Univ. Montpellier, CIRAD, CNRS, INRAE, IRD, Montpellier, France
| | - Alain Dejean
- Laboratoire écologie fonctionnelle et environnement, Université de Toulouse, CNRS, 118 route de Narbonne, 31062, Toulouse cedex 9, France.
- UMR EcoFoGAgroParisTechCirad, CNRS, INRA, Université des Antilles, Université de Guyane, Kourou, France.
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Loaiza JR, Gittens RA, Zapata R, Armien B, González-Santamaría J, Laporta GZ, Franco L. The bibliometric landscape of infectious disease research in Panama (1990-2019). Dialogues Health 2023; 2:100117. [PMID: 38515494 PMCID: PMC10953851 DOI: 10.1016/j.dialog.2023.100117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 02/11/2023] [Accepted: 02/20/2023] [Indexed: 03/23/2024]
Abstract
Background This work aims to analyze the landscape of scientific publications on subjects related to One Health and infectious diseases in Panama. The research questions are: How does the One Health research landscape look like in Panama? Are historical research efforts aligned with the One Health concept? What infectious diseases have received more attention from the local scientific community since 1990? Methods Boolean searches on the Web of Science, SCOPUS and PubMed were undertaken to evaluate the main trends of publications related to One Health and infectious disease research in the country of Panama, between 1990 and 2019. Results 4546 publications were identified since 1990, including 3564 peer-reviewed articles interconnected with One Health related descriptors, and 211 articles focused particularly on infectious diseases. A pattern of exponential growth in the number of publications with various contributions from Panamanian institutions was observed. The rate of multidisciplinary research was moderate, whereas those of interinstitutional and intersectoral research ranged from low to very low. Research efforts have centered largely on protozoan, neglected and arthropod-borne diseases with a strong emphasis on malaria, Chagas and leishmaniasis. Conclusion Panama has scientific capabilities on One Health to tackle future infectious disease threats, but the official collaboration schemes and strategic investment to develop further competencies need to be conciliated with modern times, aka the pandemics era. The main proposition here, addressed to the government of Panama, is to launch a One Health regional center to promote multidisciplinary, interinstitutional and intersectoral research activities in Panama and beyond.
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Affiliation(s)
- Jose R. Loaiza
- Instituto de Investigaciones Científicas y Servicios de Alta Tecnología (INDICASAT AIP), Panama
- Programa Centroamericano de Maestría en Entomología, Universidad de Panamá, Panama
- Smithsonian Tropical Research Institute, Apartado 0843-03092, Panama City, Panama
| | - Rolando A. Gittens
- Instituto de Investigaciones Científicas y Servicios de Alta Tecnología (INDICASAT AIP), Panama
| | - Robinson Zapata
- Secretaria Nacional de Ciencia, Tecnología e Innovación de Panamá, Panama
| | - Blas Armien
- Grupo de Biología Celular y Molecular de Arbovirus, Instituto Conmemorativo Gorgas de Estudios de la Salud, Panama
| | - José González-Santamaría
- Grupo de Biología Celular y Molecular de Arbovirus, Instituto Conmemorativo Gorgas de Estudios de la Salud, Panama
| | - Gabriel Z. Laporta
- Graduate Research and Innovation Program, Centro Universitario FMABC, Santo André, SP, Brazil
| | - Leticia Franco
- Health Emergencies Department, Pan American Health Organization, Washington, DC, United States of America
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David MR, Maciel‐de‐Freitas R, Petersen MT, Bray D, Hawkes FM, Fernández‐Grandon GM, Young S, Gibson G, Hopkins RJ. Aedes aegypti oviposition-sites choice under semi-field conditions. Med Vet Entomol 2023; 37:683-692. [PMID: 37265439 PMCID: PMC10946600 DOI: 10.1111/mve.12670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Accepted: 05/12/2023] [Indexed: 06/03/2023]
Abstract
Vector control is still the recommended approach to avoid arbovirus outbreaks. Herein, we investigate oviposition preferences of Aedes aegypti (Diptera: Culicidae) females under a semi-field structure Rio de Janeiro, Brazil. For that, in Experiment 1, we used two settings: 'Single items', which included as containers drain, beer bottle, bucket, car tyre, water tank, and a potted Peace Lily (Spathiphyllum wallisii) in a saucer with water, or 'Multiple containers', as an urban simulation, in which one drain, two additional beer bottles, and an extra plant pot saucer were added. Experiment 2 (sensory cues) used five variations of potted plant, each one varying in the range of sensory cues known to attract gravid females to oviposition containers. Our results indicate that gravid Ae. aegypti prefer to oviposit close to the ground and in open water containers with organic compounds from plant watering. Domestic large artificial containers containing tap water received significantly fewer eggs, except for the car tyre, which exhibited as many eggs as the potted plant. We also show that visual (potted plant shape) and olfactory clues (odour of the plant or from water containing organic matter) were equally attractive separately as were these stimuli together.
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Affiliation(s)
- Mariana R. David
- Laboratório de Mosquitos Transmissores de HematozoáriosInstituto Oswaldo CruzRio de JaneiroBrazil
| | - Rafael Maciel‐de‐Freitas
- Laboratório de Mosquitos Transmissores de HematozoáriosInstituto Oswaldo CruzRio de JaneiroBrazil
- Department of ArbovirologyBernhard‐Nocht Institute for Tropical MedicineHamburgGermany
| | - Martha T. Petersen
- Laboratório de Mosquitos Transmissores de HematozoáriosInstituto Oswaldo CruzRio de JaneiroBrazil
| | - Daniel Bray
- Natural Resources InstituteUniversity of Greenwich, Central Avenue, Chatham MaritimeKentUK
| | - Frances M. Hawkes
- Natural Resources InstituteUniversity of Greenwich, Central Avenue, Chatham MaritimeKentUK
| | | | - Stephen Young
- Natural Resources InstituteUniversity of Greenwich, Central Avenue, Chatham MaritimeKentUK
| | - Gabriella Gibson
- Natural Resources InstituteUniversity of Greenwich, Central Avenue, Chatham MaritimeKentUK
| | - Richard J. Hopkins
- Natural Resources InstituteUniversity of Greenwich, Central Avenue, Chatham MaritimeKentUK
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Padonou GG, Konkon AK, Salako AS, Zoungbédji DM, Ossè R, Sovi A, Azondekon R, Sidick A, Ahouandjinou JM, Adoha CJ, Sominahouin AA, Tokponnon FT, Akinro B, Sina H, Baba-Moussa L, Akogbéto MC. Distribution and Abundance of Aedes aegypti and Aedes albopictus (Diptera: Culicidae) in Benin, West Africa. Trop Med Infect Dis 2023; 8:439. [PMID: 37755900 PMCID: PMC10535150 DOI: 10.3390/tropicalmed8090439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Revised: 08/30/2023] [Accepted: 09/05/2023] [Indexed: 09/28/2023] Open
Abstract
Updated information on the distribution and abundance of Aedes aegypti and Aedes albopictus is crucial to prepare African countries, such as Benin, for possible arboviral disease outbreaks. This study aims to evaluate the geographical distribution, abundance and biting behaviour of these two vectors in Benin. Three sampling techniques were used in this study. The collection of Aedes spp. adults were made through human landing catch (HLC), immatures were captured with the use of ovitraps, and a dipping technique was used for the collection of Aedes spp. in 23 communes located along the North-South and East-West transect of Benin. Adult Aedes mosquitoes were collected indoors and outdoors using HLC. Mosquito eggs, larvae and pupae were collected from containers and ovitraps. The adult mosquitoes were morphologically identified, then confirmed using a polymerase chain reaction (PCR). Overall, 12,424 adult specimens of Aedes spp. were collected, out of which 76.53% (n = 9508) and 19.32% (n = 2400) were morphologically identified as Ae. aegypti and Ae. albopictus, respectively. Geographically, Ae. aegypti was found across the North-South transect unlike Ae. albopictus, which was only encountered in the southern part of the country, with a great preponderance in Avrankou. Furthermore, an exophagic behaviour was observed in both vectors. This updated distribution of Aedes mosquito species in Benin will help to accurately identify areas that are at risk of arboviral diseases and better plan for future vector control interventions.
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Affiliation(s)
- Germain Gil Padonou
- Centre de Recherche Entomologique de Cotonou (CREC), Cotonou 06 BP 2604, Benin; (A.K.K.); (A.S.S.); (D.M.Z.); (R.O.); (R.A.); (A.S.); (J.M.A.); (C.J.A.); (A.A.S.); (F.T.T.); (B.A.); (M.C.A.)
- Laboratory of Biology and Molecular Typing in Microbiology, Department of Biochemistry and Cellular Biology, Faculty of Sciences and Techniques, University of Abomey-Calavi, Cotonou 05 BP 1604, Benin; (H.S.); (L.B.-M.)
| | - Alphonse Keller Konkon
- Centre de Recherche Entomologique de Cotonou (CREC), Cotonou 06 BP 2604, Benin; (A.K.K.); (A.S.S.); (D.M.Z.); (R.O.); (R.A.); (A.S.); (J.M.A.); (C.J.A.); (A.A.S.); (F.T.T.); (B.A.); (M.C.A.)
- Laboratory of Biology and Molecular Typing in Microbiology, Department of Biochemistry and Cellular Biology, Faculty of Sciences and Techniques, University of Abomey-Calavi, Cotonou 05 BP 1604, Benin; (H.S.); (L.B.-M.)
| | - Albert Sourou Salako
- Centre de Recherche Entomologique de Cotonou (CREC), Cotonou 06 BP 2604, Benin; (A.K.K.); (A.S.S.); (D.M.Z.); (R.O.); (R.A.); (A.S.); (J.M.A.); (C.J.A.); (A.A.S.); (F.T.T.); (B.A.); (M.C.A.)
| | - David Mahouton Zoungbédji
- Centre de Recherche Entomologique de Cotonou (CREC), Cotonou 06 BP 2604, Benin; (A.K.K.); (A.S.S.); (D.M.Z.); (R.O.); (R.A.); (A.S.); (J.M.A.); (C.J.A.); (A.A.S.); (F.T.T.); (B.A.); (M.C.A.)
- Laboratory of Biology and Molecular Typing in Microbiology, Department of Biochemistry and Cellular Biology, Faculty of Sciences and Techniques, University of Abomey-Calavi, Cotonou 05 BP 1604, Benin; (H.S.); (L.B.-M.)
| | - Razaki Ossè
- Centre de Recherche Entomologique de Cotonou (CREC), Cotonou 06 BP 2604, Benin; (A.K.K.); (A.S.S.); (D.M.Z.); (R.O.); (R.A.); (A.S.); (J.M.A.); (C.J.A.); (A.A.S.); (F.T.T.); (B.A.); (M.C.A.)
- École de Gestion et d’Exploitation des Systèmes d’Élevage, Université Nationale d’Agriculture de Porto-Novo, Porto-Novo 01 BP 55, Benin
| | - Arthur Sovi
- Centre de Recherche Entomologique de Cotonou (CREC), Cotonou 06 BP 2604, Benin; (A.K.K.); (A.S.S.); (D.M.Z.); (R.O.); (R.A.); (A.S.); (J.M.A.); (C.J.A.); (A.A.S.); (F.T.T.); (B.A.); (M.C.A.)
- Faculty of Agronomy, University of Parakou, Parakou BP 123, Benin
- Faculty of Infectious and Tropical Diseases, Disease Control Department, The London School of Hygiene & Tropical Medicine, Keppel Street, London WC1E 7HT, UK
| | - Roseric Azondekon
- Centre de Recherche Entomologique de Cotonou (CREC), Cotonou 06 BP 2604, Benin; (A.K.K.); (A.S.S.); (D.M.Z.); (R.O.); (R.A.); (A.S.); (J.M.A.); (C.J.A.); (A.A.S.); (F.T.T.); (B.A.); (M.C.A.)
| | - Aboubakar Sidick
- Centre de Recherche Entomologique de Cotonou (CREC), Cotonou 06 BP 2604, Benin; (A.K.K.); (A.S.S.); (D.M.Z.); (R.O.); (R.A.); (A.S.); (J.M.A.); (C.J.A.); (A.A.S.); (F.T.T.); (B.A.); (M.C.A.)
| | - Juvénal Minassou Ahouandjinou
- Centre de Recherche Entomologique de Cotonou (CREC), Cotonou 06 BP 2604, Benin; (A.K.K.); (A.S.S.); (D.M.Z.); (R.O.); (R.A.); (A.S.); (J.M.A.); (C.J.A.); (A.A.S.); (F.T.T.); (B.A.); (M.C.A.)
- Laboratory of Biology and Molecular Typing in Microbiology, Department of Biochemistry and Cellular Biology, Faculty of Sciences and Techniques, University of Abomey-Calavi, Cotonou 05 BP 1604, Benin; (H.S.); (L.B.-M.)
| | - Constantin Jesukèdè Adoha
- Centre de Recherche Entomologique de Cotonou (CREC), Cotonou 06 BP 2604, Benin; (A.K.K.); (A.S.S.); (D.M.Z.); (R.O.); (R.A.); (A.S.); (J.M.A.); (C.J.A.); (A.A.S.); (F.T.T.); (B.A.); (M.C.A.)
- Laboratory of Biology and Molecular Typing in Microbiology, Department of Biochemistry and Cellular Biology, Faculty of Sciences and Techniques, University of Abomey-Calavi, Cotonou 05 BP 1604, Benin; (H.S.); (L.B.-M.)
| | - André Aimé Sominahouin
- Centre de Recherche Entomologique de Cotonou (CREC), Cotonou 06 BP 2604, Benin; (A.K.K.); (A.S.S.); (D.M.Z.); (R.O.); (R.A.); (A.S.); (J.M.A.); (C.J.A.); (A.A.S.); (F.T.T.); (B.A.); (M.C.A.)
| | - Filémon Tatchémè Tokponnon
- Centre de Recherche Entomologique de Cotonou (CREC), Cotonou 06 BP 2604, Benin; (A.K.K.); (A.S.S.); (D.M.Z.); (R.O.); (R.A.); (A.S.); (J.M.A.); (C.J.A.); (A.A.S.); (F.T.T.); (B.A.); (M.C.A.)
| | - Bruno Akinro
- Centre de Recherche Entomologique de Cotonou (CREC), Cotonou 06 BP 2604, Benin; (A.K.K.); (A.S.S.); (D.M.Z.); (R.O.); (R.A.); (A.S.); (J.M.A.); (C.J.A.); (A.A.S.); (F.T.T.); (B.A.); (M.C.A.)
| | - Haziz Sina
- Laboratory of Biology and Molecular Typing in Microbiology, Department of Biochemistry and Cellular Biology, Faculty of Sciences and Techniques, University of Abomey-Calavi, Cotonou 05 BP 1604, Benin; (H.S.); (L.B.-M.)
| | - Lamine Baba-Moussa
- Laboratory of Biology and Molecular Typing in Microbiology, Department of Biochemistry and Cellular Biology, Faculty of Sciences and Techniques, University of Abomey-Calavi, Cotonou 05 BP 1604, Benin; (H.S.); (L.B.-M.)
| | - Martin Codjo Akogbéto
- Centre de Recherche Entomologique de Cotonou (CREC), Cotonou 06 BP 2604, Benin; (A.K.K.); (A.S.S.); (D.M.Z.); (R.O.); (R.A.); (A.S.); (J.M.A.); (C.J.A.); (A.A.S.); (F.T.T.); (B.A.); (M.C.A.)
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Cuthbert RN, Darriet F, Chabrerie O, Lenoir J, Courchamp F, Claeys C, Robert V, Jourdain F, Ulmer R, Diagne C, Ayala D, Simard F, Morand S, Renault D. Invasive hematophagous arthropods and associated diseases in a changing world. Parasit Vectors 2023; 16:291. [PMID: 37592298 PMCID: PMC10436414 DOI: 10.1186/s13071-023-05887-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Accepted: 07/18/2023] [Indexed: 08/19/2023] Open
Abstract
Biological invasions have increased significantly with the tremendous growth of international trade and transport. Hematophagous arthropods can be vectors of infectious and potentially lethal pathogens and parasites, thus constituting a growing threat to humans-especially when associated with biological invasions. Today, several major vector-borne diseases, currently described as emerging or re-emerging, are expanding in a world dominated by climate change, land-use change and intensive transportation of humans and goods. In this review, we retrace the historical trajectory of these invasions to better understand their ecological, physiological and genetic drivers and their impacts on ecosystems and human health. We also discuss arthropod management strategies to mitigate future risks by harnessing ecology, public health, economics and social-ethnological considerations. Trade and transport of goods and materials, including vertebrate introductions and worn tires, have historically been important introduction pathways for the most prominent invasive hematophagous arthropods, but sources and pathways are likely to diversify with future globalization. Burgeoning urbanization, climate change and the urban heat island effect are likely to interact to favor invasive hematophagous arthropods and the diseases they can vector. To mitigate future invasions of hematophagous arthropods and novel disease outbreaks, stronger preventative monitoring and transboundary surveillance measures are urgently required. Proactive approaches, such as the use of monitoring and increased engagement in citizen science, would reduce epidemiological and ecological risks and could save millions of lives and billions of dollars spent on arthropod control and disease management. Last, our capacities to manage invasive hematophagous arthropods in a sustainable way for worldwide ecosystems can be improved by promoting interactions among experts of the health sector, stakeholders in environmental issues and policymakers (e.g. the One Health approach) while considering wider social perceptions.
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Affiliation(s)
- Ross N Cuthbert
- Institute for Global Food Security, School of Biological Sciences, Queen's University Belfast, Belfast, UK.
| | | | - Olivier Chabrerie
- UMR CNRS 7058 "Ecologie et Dynamique des Systèmes Anthropisés" (EDYSAN), Université de Picardie Jules Verne, 1 rue des Louvels, 80037, Amiens Cedex 1, France
| | - Jonathan Lenoir
- UMR CNRS 7058 "Ecologie et Dynamique des Systèmes Anthropisés" (EDYSAN), Université de Picardie Jules Verne, 1 rue des Louvels, 80037, Amiens Cedex 1, France
| | - Franck Courchamp
- Ecologie Systématique Evolution, Université Paris-Saclay, CNRS, AgroParisTech, Gif sur Yvette, France
| | - Cecilia Claeys
- Centre de Recherche sur les Sociétés et les Environnement Méditerranéens (CRESEM), UR 7397 UPVD, Université de Perpignan, Perpignan, France
| | - Vincent Robert
- MIVEGEC, Université Montpellier, IRD, CNRS, Montpellier, France
| | - Frédéric Jourdain
- MIVEGEC, Université Montpellier, IRD, CNRS, Montpellier, France
- Santé Publique France, Saint-Maurice, France
| | - Romain Ulmer
- UMR CNRS 7058 "Ecologie et Dynamique des Systèmes Anthropisés" (EDYSAN), Université de Picardie Jules Verne, 1 rue des Louvels, 80037, Amiens Cedex 1, France
| | - Christophe Diagne
- CBGP, Université Montpellier, CIRAD, INRAE, Institut Agro, IRD, 755 Avenue du Campus Agropolis, 34988, Cedex, Montferrier-Sur-Lez, France
| | - Diego Ayala
- MIVEGEC, Université Montpellier, IRD, CNRS, Montpellier, France
- Medical Entomology Unit, Institut Pasteur de Madagascar, BP 1274, Antananarivo, Madagascar
| | - Frédéric Simard
- MIVEGEC, Université Montpellier, IRD, CNRS, Montpellier, France
| | - Serge Morand
- MIVEGEC, Université Montpellier, IRD, CNRS, Montpellier, France
- Faculty of Veterinary Technology, CNRS - CIRAD, Kasetsart University, Bangkok, Thailand
| | - David Renault
- Université de Rennes, CNRS, ECOBIO (Ecosystèmes, Biodiversité, Évolution) - UMR 6553, Rennes, France
- Institut Universitaire de France, 1 Rue Descartes, Paris, France
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7
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Brindle HE, Bastos LS, Christley R, Contamin L, Dang LH, Anh DD, French N, Griffiths M, Nadjm B, van Doorn HR, Thai PQ, Duong TN, Choisy M. The spatio-temporal distribution of acute encephalitis syndrome and its association with climate and landcover in Vietnam. BMC Infect Dis 2023; 23:403. [PMID: 37312047 DOI: 10.1186/s12879-023-08300-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2023] [Accepted: 05/03/2023] [Indexed: 06/15/2023] Open
Abstract
BACKGROUND Acute encephalitis syndrome (AES) differs in its spatio-temporal distribution in Vietnam with the highest incidence seen during the summer months in the northern provinces. AES has multiple aetiologies, and the cause remains unknown in many cases. While vector-borne disease such as Japanese encephalitis and dengue virus and non-vector-borne diseases such as influenza and enterovirus show evidence of seasonality, associations with climate variables and the spatio-temporal distribution in Vietnam differs between these. The aim of this study was therefore to understand the spatio-temporal distribution of, and risk factors for AES in Vietnam to help hypothesise the aetiology. METHODS The number of monthly cases per province for AES, meningitis and diseases including dengue fever; influenza-like-illness (ILI); hand, foot, and mouth disease (HFMD); and Streptococcus suis were obtained from the General Department for Preventive Medicine (GDPM) from 1998-2016. Covariates including climate, normalized difference vegetation index (NDVI), elevation, the number of pigs, socio-demographics, JEV vaccination coverage and the number of hospitals were also collected. Spatio-temporal multivariable mixed-effects negative binomial Bayesian models with an outcome of the number of cases of AES, a combination of the covariates and harmonic terms to determine the magnitude of seasonality were developed. RESULTS The national monthly incidence of AES declined by 63.3% over the study period. However, incidence increased in some provinces, particularly in the Northwest region. In northern Vietnam, the incidence peaked in the summer months in contrast to the southern provinces where incidence remained relatively constant throughout the year. The incidence of meningitis, ILI and S. suis infection; temperature, relative humidity with no lag, NDVI at a lag of one month, and the number of pigs per 100,000 population were positively associated with the number of cases of AES in all models in which these covariates were included. CONCLUSIONS The positive correlation of AES with temperature and humidity suggest that a number of cases may be due to vector-borne diseases, suggesting a need to focus on vaccination campaigns. However, further surveillance and research are recommended to investigate other possible aetiologies such as S. suis or Orientia tsutsugamushi.
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Affiliation(s)
- Hannah E Brindle
- Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Liverpool, UK.
- Oxford University Clinical Research Unit, Hanoi City, Vietnam.
| | - Leonardo S Bastos
- Scientific Computing Programme, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Robert Christley
- Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Liverpool, UK
| | - Lucie Contamin
- Institut de Recherche Pour Le Développement, Hanoi, Vietnam
| | - Le Hai Dang
- National Institute of Hygiene and Epidemiology, Hanoi, Vietnam
| | - Dang Duc Anh
- National Institute of Hygiene and Epidemiology, Hanoi, Vietnam
| | - Neil French
- Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Liverpool, UK
| | - Michael Griffiths
- Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Liverpool, UK
| | - Behzad Nadjm
- Oxford University Clinical Research Unit, Hanoi City, Vietnam
- MRC Unit The Gambia at the London, School of Hygiene & Tropical Medicine, Fajara, The Gambia
| | - H Rogier van Doorn
- Oxford University Clinical Research Unit, Hanoi City, Vietnam
- Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Pham Quang Thai
- National Institute of Hygiene and Epidemiology, Hanoi, Vietnam
- School Preventive Medicine and Public Health, Hanoi Medical University, Hanoi, Vietnam
| | - Tran Nhu Duong
- National Institute of Hygiene and Epidemiology, Hanoi, Vietnam
| | - Marc Choisy
- Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine, University of Oxford, Oxford, UK
- Oxford University Clinical Research Unit, Ho Chi Minh City, Vietnam
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8
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Robert MA, Rodrigues HS, Herrera D, de Mata Donado Campos J, Morilla F, Del Águila Mejía J, Guardado ME, Skewes R, Colomé-Hidalgo M. Spatiotemporal and meteorological relationships in dengue transmission in the Dominican Republic, 2015-2019. Trop Med Health 2023; 51:32. [PMID: 37269000 DOI: 10.1186/s41182-023-00517-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Accepted: 04/30/2023] [Indexed: 06/04/2023] Open
Abstract
Dengue has broadened its global distribution substantially in the past two decades, and many endemic areas are experiencing increases in incidence. The Dominican Republic recently experienced its two largest outbreaks to date with 16,836 reported cases in 2015 and 20,123 reported cases in 2019. With continued increases in dengue transmission, developing tools to better prepare healthcare systems and mosquito control agencies is of critical importance. Before such tools can be developed, however, we must first better understand potential drivers of dengue transmission. To that end, we focus in this paper on determining relationships between climate variables and dengue transmission with an emphasis on eight provinces and the capital city of the Dominican Republic in the period 2015-2019. We present summary statistics for dengue cases, temperature, precipitation, and relative humidity in this period, and we conduct an analysis of correlated lags between climate variables and dengue cases as well as correlated lags among dengue cases in each of the nine locations. We find that the southwestern province of Barahona had the largest dengue incidence in both 2015 and 2019. Among all climate variables considered, lags between relative humidity variables and dengue cases were the most frequently correlated. We found that most locations had significant correlations with cases in other locations at lags of zero weeks. These results can be used to improve predictive models of dengue transmission in the country.
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Affiliation(s)
- Michael A Robert
- Department of Mathematics and Center for Emerging, Zoonotic, and Arthropod-Borne Pathogens (CeZAP), Virginia Polytechnic Institute and State University, Blacksburg, VA, USA.
| | - Helena Sofia Rodrigues
- Escola Superior de Ciências Empresariais, Instituto Politécnico de Viana do Castelo, Valença, Portugal
- Centro de Investigação e Desenvolvimento em Matemática e Aplicações, Universidade de Aveiro, Aveiro, Portugal
| | - Demian Herrera
- Centro de Investigación en Salud Dr. Hugo Mendoza, Hospital Pediátrico Dr. Hugo Mendoza, Santo Domingo, Dominican Republic
| | - Juan de Mata Donado Campos
- Departamento de Medicina Preventiva y Salud Pública y Microbiología, Facultad de Medicina, Universidad Autónoma de Madrid, Madrid, Spain
- Instituto de Investigación Sanitaria del Hospital Universitario La Paz (IdiPAZ), Universidad Autónoma de Madrid, Madrid, Spain
- Consorcio de Investigación Biomédica en Red de Epidemiología y Salud Pública (CIBERESP), Instituto de Salud Carlos III, Calle Monforte de Lemos 3-5, 28029, Madrid, Spain
| | - Fernando Morilla
- Departamento de Informática y Automática, Escuela Técnica Superior de Ingeniería Informática, Universidad Nacional de Educación a Distancia, Madrid, Spain
| | - Javier Del Águila Mejía
- Departamento de Medicina Preventiva y Salud Pública y Microbiología, Facultad de Medicina, Universidad Autónoma de Madrid, Madrid, Spain
| | - María Elena Guardado
- Instituto Tecnológico de Santo Domingo (INTEC), Santo Domingo, Dominican Republic
| | - Ronald Skewes
- Dirección General de Epidemiología, Ministerio de Salud, Santo Domingo, Dominican Republic
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9
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Alkhaibari AM, Wood MJ, Yavasoglu SI, Bull JC, Butt TM. Optimizing the Application Timing and Dosage of Metarhizium brunneum (Hypocreales: Clavicipitaceae) as a Biological Control Agent of Aedes aegypti (Diptera: Culicidae) Larvae. J Med Entomol 2023; 60:339-345. [PMID: 36539333 PMCID: PMC9989833 DOI: 10.1093/jme/tjac186] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Indexed: 06/02/2023]
Abstract
Aedes aegypti (Diptera: Culicidae) is the principal vector of dengue and other viruses that cause disease among 100 to 400 million people each year. The recent development of widespread insecticidal resistance has led to the rapid development of biological control solutions aimed at larval control. While the efficacy of Metarhizium brunneum has been shown against Aedes larvae, the impact of larval population dynamics will need to be determined to formulate effective control strategies. In this study, larvae were subjected to four concentrations of M. brunneum (105, 106, 107, 108 conidia ml-1). Larvae were found to be susceptible to M. brunneum with dose-dependent efficacy. When constant larval immigration was added as a parameter, peak mortality was consistently found to occur on the fourth day, before a significant reduction in control efficacy linked to a decline in conidial availability within the water column. This suggests that M. brunneum treatments should be applied at a concentration 1 × 107 conidia ml-1 every four days to effectively control mosquito larvae in the field, regardless of the fungal formulation, water volume, or larval density. Understanding fungal-mosquito dynamics is critical in developing appropriate control programs as it helps optimize the fungal control agent's dose and frequency of application.
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Affiliation(s)
| | | | - S I Yavasoglu
- Department of Biology, Faculty of Science, Aydın Adnan Menderes University, 09100, Aydın, Turkiye
| | - J C Bull
- Department of Biosciences, Faculty of Science and Engineering, Swansea University, Singleton Park, Swansea SA2 8PP, UK
| | - T M Butt
- Department of Biosciences, Faculty of Science and Engineering, Swansea University, Singleton Park, Swansea SA2 8PP, UK
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10
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Laporta GZ, Potter AM, Oliveira JFA, Bourke BP, Pecor DB, Linton YM. Global Distribution of Aedes aegypti and Aedes albopictus in a Climate Change Scenario of Regional Rivalry. Insects 2023; 14:49. [PMID: 36661976 PMCID: PMC9860750 DOI: 10.3390/insects14010049] [Citation(s) in RCA: 18] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 12/17/2022] [Accepted: 12/30/2022] [Indexed: 06/17/2023]
Abstract
Arboviral mosquito vectors are key targets for the surveillance and control of vector-borne diseases worldwide. In recent years, changes to the global distributions of these species have been a major research focus, aimed at predicting outbreaks of arboviral diseases. In this study, we analyzed a global scenario of climate change under regional rivalry to predict changes to these species' distributions over the next century. Using occurrence data from VectorMap and environmental variables (temperature and precipitation) from WorldClim v. 2.1, we first built fundamental niche models for both species with the boosted regression tree modelling approach. A scenario of climate change on their fundamental niche was then analyzed. The shared socioeconomic pathway scenario 3 (regional rivalry) and the global climate model Geophysical Fluid Dynamics Laboratory Earth System Model v. 4.1 (GFDL-ESM4.1; gfdl.noaa.gov) were utilized for all analyses, in the following time periods: 2021-2040, 2041-2060, 2061-2080, and 2081-2100. Outcomes from these analyses showed that future climate change will affect Ae. aegypti and Ae. albopictus distributions in different ways across the globe. The Northern Hemisphere will have extended Ae. aegypti and Ae. albopictus distributions in future climate change scenarios, whereas the Southern Hemisphere will have the opposite outcomes. Europe will become more suitable for both species and their related vector-borne diseases. Loss of suitability in the Brazilian Amazon region further indicated that this tropical rainforest biome will have lower levels of precipitation to support these species in the future. Our models provide possible future scenarios to help identify locations for resource allocation and surveillance efforts before a significant threat to human health emerges.
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Affiliation(s)
- Gabriel Z. Laporta
- Graduate Research and Innovation Program, Centro Universitario FMABC, Santo André 09060-870, SP, Brazil
| | - Alexander M. Potter
- One Health Branch, Walter Reed Army Institute of Research, Silver Spring, MD 20910, USA
- Walter Reed Biosystematics Unit, Smithsonian Museum Support Center, Suitland, MD 20746, USA
- Department of Entomology, Smithsonian Institution—National Museum of Natural History (NMNH), Washington, DC 20560, USA
| | - Janeide F. A. Oliveira
- Graduate Research and Innovation Program, Centro Universitario FMABC, Santo André 09060-870, SP, Brazil
- Department of Civil Engineering, School of Engineering, Campus Crajubar, Universidade Regional do Cariri, Crato 63105-010, CE, Brazil
| | - Brian P. Bourke
- One Health Branch, Walter Reed Army Institute of Research, Silver Spring, MD 20910, USA
- Walter Reed Biosystematics Unit, Smithsonian Museum Support Center, Suitland, MD 20746, USA
- Department of Entomology, Smithsonian Institution—National Museum of Natural History (NMNH), Washington, DC 20560, USA
| | - David B. Pecor
- One Health Branch, Walter Reed Army Institute of Research, Silver Spring, MD 20910, USA
- Walter Reed Biosystematics Unit, Smithsonian Museum Support Center, Suitland, MD 20746, USA
- Department of Entomology, Smithsonian Institution—National Museum of Natural History (NMNH), Washington, DC 20560, USA
| | - Yvonne-Marie Linton
- One Health Branch, Walter Reed Army Institute of Research, Silver Spring, MD 20910, USA
- Walter Reed Biosystematics Unit, Smithsonian Museum Support Center, Suitland, MD 20746, USA
- Department of Entomology, Smithsonian Institution—National Museum of Natural History (NMNH), Washington, DC 20560, USA
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11
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Winchell KM, Aviles‐Rodriguez KJ, Carlen EJ, Miles LS, Charmantier A, De León LF, Gotanda KM, Rivkin LR, Szulkin M, Verrelli BC. Moving past the challenges and misconceptions in urban adaptation research. Ecol Evol 2022; 12:e9552. [PMID: 36425909 PMCID: PMC9679025 DOI: 10.1002/ece3.9552] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 10/25/2022] [Accepted: 11/04/2022] [Indexed: 10/14/2023] Open
Abstract
Although the field of urban evolutionary ecology has recently expanded, much progress has been made in identifying adaptations that arise as a result of selective pressures within these unique environments. However, as studies within urban environments have rapidly increased, researchers have recognized that there are challenges and opportunities in characterizing urban adaptation. Some of these challenges are a consequence of increased direct and indirect human influence, which compounds long-recognized issues with research on adaptive evolution more generally. In this perspective, we discuss several common research challenges to urban adaptation related to (1) methodological approaches, (2) trait-environment relationships and the natural history of organisms, (3) agents and targets of selection, and (4) habitat heterogeneity. Ignoring these challenges may lead to misconceptions and further impede our ability to draw conclusions regarding evolutionary and ecological processes in urban environments. Our goal is to first shed light on the conceptual challenges of conducting urban adaptation research to help avoid the propagation of these misconceptions. We further summarize potential strategies to move forward productively to construct a more comprehensive picture of urban adaptation, and discuss how urban environments also offer unique opportunities and applications for adaptation research.
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Affiliation(s)
- Kristin M. Winchell
- Department of BiologyNew York UniversityNew YorkNYUSA
- Department of BiologyWashington University in St. LouisSt. LouisMissouriUSA
| | - Kevin J. Aviles‐Rodriguez
- Department of BiologyUniversity of Massachusetts BostonBostonMassachusettsUSA
- Department of BiologyFordham UniversityBronxNew YorkUSA
| | - Elizabeth J. Carlen
- Department of BiologyWashington University in St. LouisSt. LouisMissouriUSA
- Department of BiologyFordham UniversityBronxNew YorkUSA
- Living Earth CollaborativeWashington University in St. LouisSt. LouisMissouriUSA
| | - Lindsay S. Miles
- Center for Biological Data ScienceVirginia Commonwealth UniversityRichmondVirginiaUSA
| | - Anne Charmantier
- Centre d'Ecologie Fonctionnelle et EvolutiveUniversité de Montpellier, CNRS, EPHE, IRDMontpellierFrance
| | - Luis F. De León
- Department of BiologyUniversity of Massachusetts BostonBostonMassachusettsUSA
| | - Kiyoko M. Gotanda
- Department of BiologyUniversité de SherbrookeSherbrookeQuebecCanada
- Department of Biological SciencesBrock UniversitySt. Catharine'sOntarioCanada
| | - L. Ruth Rivkin
- Department of Ecology and Evolutionary BiologyUniversity of TorontoTorontoOntarioCanada
- Department of BiologyUniversity of Toronto MississaugaMississaugaOntarioCanada
- Centre for Urban EnvironmentsUniversity of Toronto MississaugaMississaugaOntarioCanada
| | - Marta Szulkin
- Centre of New TechnologiesUniversity of WarsawWarsawPoland
| | - Brian C. Verrelli
- Center for Biological Data ScienceVirginia Commonwealth UniversityRichmondVirginiaUSA
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12
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Zhang HD, Gao J, Li CX, Ma Z, Liu Y, Wang G, Liu Q, Xing D, Guo XX, Zhao T, Jiang YT, Dong YD, Zhao TY. Genetic Diversity and Population Genetic Structure of Aedes albopictus in the Yangtze River Basin, China. Genes (Basel) 2022; 13:1950. [PMID: 36360187 PMCID: PMC9690033 DOI: 10.3390/genes13111950] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 09/06/2022] [Accepted: 09/12/2022] [Indexed: 09/10/2023] Open
Abstract
Aedes albopictus is an indigenous primary vector of dengue and Zika viruses in China. Understanding the population spatial genetic structure, migration, and gene flow of vector species is critical to effectively preventing and controlling vector-borne diseases. The genetic variation and population structure of Ae. albopictus populations collected from 22 cities along the Yangtze River Basin were investigated with nine microsatellite loci and the mitochondrial CoxI gene. The polymorphic information content (PIC) values ranged from 0.534 to 0.871. The observed number of alleles (Na) values ranged from 5.455 to 11.455, and the effective number of alleles (Ne) values ranged from 3.106 to 4.041. The Shannon Index (I) ranged from 1.209 to 1.639. The observed heterozygosity (Ho) values ranged from 0.487 to 0.545. The FIS value ranged from 0.047 to 0.212. All Ae. albopictus populations were adequately allocated to three clades with significant genetic differences. Haplotype 2 is the most primitive molecular type and forms 26 other haplotypes after one or more site mutations. The rapid expansion of high-speed rail, aircraft routes and highways along the Yangtze River Basin have accelerated the dispersal and communication of mosquitoes, which appears to have contributed to inhibited population differentiation and promoted genetic diversity among Ae. albopictus populations.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | - Tong-Yan Zhao
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, China
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13
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Villena OC, Sullivan JH, Landa ER, Yarwood SA, Torrents A, Zhang A, Leisnham PT. The Role of Tire Leachate in Condition-Specific Competition and the Persistence of a Resident Mosquito from a Competitively Superior Invader. Insects 2022; 13:insects13110969. [PMID: 36354795 PMCID: PMC9693511 DOI: 10.3390/insects13110969] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2022] [Revised: 10/16/2022] [Accepted: 10/18/2022] [Indexed: 05/12/2023]
Abstract
(1) Background: Condition-specific competition, when the outcome of competition varies with abiotic conditions, can facilitate species coexistence in spatially or temporally variable environments. Discarded vehicle tires degrade to leach contaminants into collected rainwater that provide habitats for competing mosquito species. We tested the hypothesis that more highly degraded tires that contain greater tire leachate alters interspecific mosquito competition to produce a condition-specific advantage for the resident, Culex pipiens, by altering the outcome of competition with the competitively superior invasive Aedes albopictus. (2) Methods: In a competition trial, varying densities of newly hatched Ae. albopictus and Cx. pipiens larvae were added to tires that had been exposed to three different ultraviolet (UV)-B conditions that mimicked full-sun, shade, or no UV-B conditions in the field. We also measured Cx. pipiens and Ae. albopictus oviposition preference among four treatments with varying tire leachate (high and low) and resources (high and low) amounts to determine if adult gravid females avoided habitats with higher tire leachate. (3) Results: We found stronger competitive effects of Cx. pipiens on the population performance and survival of Ae. albopictus in tires exposed to shade and full-sun conditions that had higher concentrations of contaminants. Further, zinc concentration was higher in emergent adults of Ae. albopictus than Cx. pipiens. Oviposition by these species was similar between tire leachate treatments but not by resource amount. (4) Conclusions: These results suggest that degraded tires with higher tire leachate may promote condition-specific competition by reducing the competitive advantage of invasive Ae. albopictus over resident Cx. pipiens and, combined with Cx. pipiens' preferential oviposition in higher resource sites, contribute to the persistence of the resident species.
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Affiliation(s)
- Oswaldo C. Villena
- Marine Estuarine & Environmental Sciences, University of Maryland, College Park, MD 20742, USA
| | - Joseph H. Sullivan
- Department of Plant Science & Landscape Architecture, University of Maryland, College Park, MD 20742, USA
| | - Edward R. Landa
- Department of Environmental Science & Technology, University of Maryland, College Park, MD 20742, USA
| | - Stephanie A. Yarwood
- Department of Environmental Science & Technology, University of Maryland, College Park, MD 20742, USA
| | - Alba Torrents
- Department of Civil & Environmental Engineering, University of Maryland, College Park, MD 20742, USA
| | - Aijun Zhang
- Invasive Insect Biocontrol & Behavior Laboratory, Beltsville Agricultural Research Center-West, USDA-ARS, Beltsville, MD 20705, USA
| | - Paul T. Leisnham
- Department of Environmental Science & Technology, University of Maryland, College Park, MD 20742, USA
- Correspondence:
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14
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Peach DAH, Matthews BJ. The Invasive Mosquitoes of Canada: An Entomological, Medical, and Veterinary Review. Am J Trop Med Hyg 2022; 107:231-244. [PMID: 35895394 PMCID: PMC9393454 DOI: 10.4269/ajtmh.21-0167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Accepted: 05/03/2022] [Indexed: 11/07/2022] Open
Abstract
Several invasive mosquitoes have become established in Canada, including important pathogen vectors such as Aedes albopictus, Ae. japonicus, and Culex pipiens. Some species have been present for decades, while others are recent arrivals. Several species present new health concerns and may result in autochthonous seasonal outbreaks of pathogens, particularly in southern Canada, that were previously restricted to imported cases. This review provides an overview of current knowledge of the biological, medical, and veterinary perspectives of these invasive species and highlights the need for increased monitoring efforts and information sharing.
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Affiliation(s)
- Daniel A. H. Peach
- Department of Zoology, University of British Columbia, Vancouver, BC, Canada
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15
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Edillo F, Ymbong RR, Cabahug MM, Labiros D, Suycano MW, Lambrechts L, Sakuntabhai A. Yearly variations of the genetic structure of Aedes aegypti (Linnaeus) (Diptera: Culicidae) in the Philippines (2017-2019). Infect Genet Evol 2022; 102:105296. [PMID: 35526823 DOI: 10.1016/j.meegid.2022.105296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 04/29/2022] [Accepted: 05/01/2022] [Indexed: 06/14/2023]
Abstract
Dengue is the fastest emerging arboviral disease in the world, imposing a substantial health and economic burden in the tropics and subtropics. The mosquito, Aedes aegypti, is the primary vector of dengue in the Philippines. We examined the genetic structure of Ae. aegypti populations collected from the Philippine major islands (Luzon, Visayas and Mindanao), each with highland (Baguio city, Cebu city mountains and Maramag, Bukidnon, respectively) and lowland sites (Quezon city; Liloan, Cebu and Cagayan de Oro [CDO] city, respectively) during the wet (2017-2018 and 2018-2019) and dry seasons (2018 and 2019). Mosquitoes (n = 1800) were reared from field-collected eggs and immatures, and were analyzed using 12 microsatellite loci. Generalized linear model analyses revealed yearly variations between highlands and lowlands in the major islands as supported by Bayesian clustering analyses on: 1) stronger selection (inbreeding coefficient, FIS = 0.52) in 2017-2018 than in 2018-2019 (FIS = 0.32) as influenced by rainfall, 2) the number of non-neutral loci indicating selection, and 3) differences of effective population size although at p = 0.05. Across sites except Baguio and CDO cities: 1) FIS varied seasonally as influenced by relative humidity (RH), and 2) the number of non-neutral loci varied as influenced by RH and rainfall indicating selection. Human-mediated activities and not isolation by distance influenced genetic differentiations of mosquito populations within (FST = 0.04) the major islands and across sites (global FST = 0.16). Gene flow (Nm) and potential first generation migrants among populations were observed between lowlands and highlands within and across major islands. Our results suggest that dengue control strategies in the epidemic wet season are to be changed into whole year-round approach, and water pipelines are to be installed in rural mountains to prevent the potential breeding sites of mosquitoes.
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Affiliation(s)
- Frances Edillo
- Mosquito Research Laboratory, Department of Biology, University of San Carlos - Talamban campus, Cebu city 6000, Philippines.
| | - Rhoniel Ryan Ymbong
- Mosquito Research Laboratory, Department of Biology, University of San Carlos - Talamban campus, Cebu city 6000, Philippines.
| | - Maureen Mathilde Cabahug
- Mosquito Research Laboratory, Department of Biology, University of San Carlos - Talamban campus, Cebu city 6000, Philippines
| | - Dinesse Labiros
- Mosquito Research Laboratory, Department of Biology, University of San Carlos - Talamban campus, Cebu city 6000, Philippines
| | - Mark Windy Suycano
- Mosquito Research Laboratory, Department of Biology, University of San Carlos - Talamban campus, Cebu city 6000, Philippines
| | - Louis Lambrechts
- Insect-Virus Interactions Unit, Institut Pasteur, UMR2000, CNRS, Paris, France.
| | - Anavaj Sakuntabhai
- Functional Genetics of Infectious Diseases Unit, Institut Pasteur, UMR2000, CNRS, Paris, France.
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16
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Mohammadi A, Mostafavi E, Zaim M, Enayati A, Basseri HR, Mirolyaei A, Poormozafari J, Gouya MM. Imported tires; a potential source for the entry of Aedes invasive mosquitoes to Iran. Travel Med Infect Dis 2022; 49:102389. [PMID: 35753657 DOI: 10.1016/j.tmaid.2022.102389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 05/03/2022] [Accepted: 06/20/2022] [Indexed: 11/16/2022]
Abstract
INTRODUCTION International trade of tires has been responsible for the introduction of invasive Aedes species into many countries. The present study aimed to determine the sources and volume of such trading in Iran and to establish and map points of entry for entomological surveillance. METHOD A list of tire importers, type and number of tires and source of their shipment was compiled, and the map of the main location(s) of their depot in the country was produced from 2017 to 2018. Contamination of imported tires with mosquito eggs or larvae was also determined. The samples from all parts of the warehouse were taken randomly from 4 to 20 tires every 15 days. In tires with a trace of water inside, the existence of the egg and larva of Aedes mosquitoes was investigated by sticking the glue band to the hot spot of left water inside the unpacked tires. RESULTS Approximately one-third of the annual tire requirements of Iran were imported from 15 countries, most of which were endemic to Aedes aegypti and or Ae. albopictus. It is obligatory to import only wrapped tires. About 10% of total country consumption is imported through informal markets and smuggled. However, the unofficially imported tires are usually not wrapped. The majority of tire imports were made through the southern ports of the country. The main sites for depots of imported tires were located in four Iranian provinces, namely Tehran, Isfahan, Fars, and Sistan and Baluchestan. The latter is extremely important given its border with Pakistan. Depot locations were mostly unstructured, and tires were kept in the open air. All these depot locations were at the edge of towns and residential areas. Priority areas for routine entomological surveillance were established. Such as the previous studies, surveillance of imported tires for the presence of Aedes eggs or larvae was negative in this study. DISCUSSION Mapping the entry points of imported tires and their origin is crucial to determine and prioritize sites for entomological surveillance of invasive mosquito species. Strengthening collaboration with customs authorities and the association of tire importers is imperative in this effort. The development of national rules and regulations for tire import is necessary to minimize the danger of the introduction of invasive vector species into the country.
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Affiliation(s)
- Ali Mohammadi
- Department of Epidemiology and Biostatistics, Research Centre for Emerging and Reemerging Infectious Diseases, Pasteur Institute of Iran, Tehran, Iran; Department of Medical Entomology and Vector Control, School of Public Health and National Institute of Health Research, Tehran University of Medical Sciences, Tehran, Iran
| | - Ehsan Mostafavi
- Department of Epidemiology and Biostatistics, Research Centre for Emerging and Reemerging Infectious Diseases, Pasteur Institute of Iran, Tehran, Iran.
| | - Morteza Zaim
- Department of Medical Entomology and Vector Control, School of Public Health and National Institute of Health Research, Tehran University of Medical Sciences, Tehran, Iran
| | - AhmadAli Enayati
- Department of Medical Entomology and Vector Control, School of Public Health and Health Sciences Research Centre, Mazandaran University of Medical Sciences, Sari, Iran
| | - Hamid Reza Basseri
- Department of Medical Entomology and Vector Control, School of Public Health and National Institute of Health Research, Tehran University of Medical Sciences, Tehran, Iran
| | - AbdolReza Mirolyaei
- Iranian Center for Communicable Disease Control, Ministry of Health and Medical Education, Tehran, Iran
| | - Jamshid Poormozafari
- Iranian Center for Communicable Disease Control, Ministry of Health and Medical Education, Tehran, Iran
| | - Mohammad Mahdi Gouya
- Iranian Center for Communicable Disease Control, Ministry of Health and Medical Education, Tehran, Iran
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de Lima CL, da Silva ACG, Moreno GMM, Cordeiro da Silva C, Musah A, Aldosery A, Dutra L, Ambrizzi T, Borges IVG, Tunali M, Basibuyuk S, Yenigün O, Massoni TL, Browning E, Jones K, Campos L, Kostkova P, da Silva Filho AG, dos Santos WP. Temporal and Spatiotemporal Arboviruses Forecasting by Machine Learning: A Systematic Review. Front Public Health 2022; 10:900077. [PMID: 35719644 PMCID: PMC9204152 DOI: 10.3389/fpubh.2022.900077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2022] [Accepted: 05/03/2022] [Indexed: 11/13/2022] Open
Abstract
Arboviruses are a group of diseases that are transmitted by an arthropod vector. Since they are part of the Neglected Tropical Diseases that pose several public health challenges for countries around the world. The arboviruses' dynamics are governed by a combination of climatic, environmental, and human mobility factors. Arboviruses prediction models can be a support tool for decision-making by public health agents. In this study, we propose a systematic literature review to identify arboviruses prediction models, as well as models for their transmitter vector dynamics. To carry out this review, we searched reputable scientific bases such as IEE Xplore, PubMed, Science Direct, Springer Link, and Scopus. We search for studies published between the years 2015 and 2020, using a search string. A total of 429 articles were returned, however, after filtering by exclusion and inclusion criteria, 139 were included. Through this systematic review, it was possible to identify the challenges present in the construction of arboviruses prediction models, as well as the existing gap in the construction of spatiotemporal models.
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Affiliation(s)
- Clarisse Lins de Lima
- Nucleus for Computer Engineering, Polytechnique School of the University of Pernambuco, Poli-UPE, Recife, Brazil
| | - Ana Clara Gomes da Silva
- Nucleus for Computer Engineering, Polytechnique School of the University of Pernambuco, Poli-UPE, Recife, Brazil
| | | | | | - Anwar Musah
- Centre for Digital Public Health and Emergencies, Institute for Risk and Disaster Reduction, University College London, London, United Kingdom
| | - Aisha Aldosery
- Centre for Digital Public Health and Emergencies, Institute for Risk and Disaster Reduction, University College London, London, United Kingdom
| | - Livia Dutra
- Department of Atmospheric Sciences, IAG-USP, University of São Paulo, São Paulo, Brazil
| | - Tercio Ambrizzi
- Department of Atmospheric Sciences, IAG-USP, University of São Paulo, São Paulo, Brazil
| | - Iuri V. G. Borges
- Department of Atmospheric Sciences, IAG-USP, University of São Paulo, São Paulo, Brazil
| | - Merve Tunali
- Boǧaziçi University, Institute of Environmental Sciences, Istanbul, Turkey
| | - Selma Basibuyuk
- Boǧaziçi University, Institute of Environmental Sciences, Istanbul, Turkey
| | - Orhan Yenigün
- Boǧaziçi University, Institute of Environmental Sciences, Istanbul, Turkey
| | - Tiago Lima Massoni
- Department of Systems and Computing, Federal University of Campina Grande, Campina Grande, Brazil
| | - Ella Browning
- Centre for Biodiversity and Environment Research, Department of Genetics, Evolution and Environment, University College London, London, United Kingdom
| | - Kate Jones
- Centre for Biodiversity and Environment Research, Department of Genetics, Evolution and Environment, University College London, London, United Kingdom
| | - Luiza Campos
- Department of Civil Environmental and Geomatic Engineering, University College London, London, United Kingdom
| | - Patty Kostkova
- Centre for Digital Public Health and Emergencies, Institute for Risk and Disaster Reduction, University College London, London, United Kingdom
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Navarro Valencia V, Díaz Y, Pascale JM, Boni MF, Sanchez-Galan JE. Assessing the Effect of Climate Variables on the Incidence of Dengue Cases in the Metropolitan Region of Panama City. Int J Environ Res Public Health 2021; 18:ijerph182212108. [PMID: 34831862 PMCID: PMC8619576 DOI: 10.3390/ijerph182212108] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 11/08/2021] [Accepted: 11/09/2021] [Indexed: 11/24/2022]
Abstract
The present analysis uses the data of confirmed incidence of dengue cases in the metropolitan region of Panama from 1999 to 2017 and climatic variables (air temperature, precipitation, and relative humidity) during the same period to determine if there exists a correlation between these variables. In addition, we compare the predictive performance of two regression models (SARIMA, SARIMAX) and a recurrent neural network model (RNN-LSTM) on the dengue incidence series. For this data from 1999–2014 was used for training and the three subsequent years of incidence 2015–2017 were used for prediction. The results show a correlation coefficient between the climatic variables and the incidence of dengue were low but statistical significant. The RMSE and MAPE obtained for the SARIMAX and RNN-LSTM models were 25.76, 108.44 and 26.16, 59.68, which suggest that any of these models can be used to predict new outbreaks. Although, it can be said that there is a limited role of climatic variables in the outputs the models. The value of this work is that it helps understand the behaviour of cases in a tropical setting as is the Metropolitan Region of Panama City, and provides the basis needed for a much needed early alert system for the region.
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Affiliation(s)
- Vicente Navarro Valencia
- Facultad de Ciencias y Tecnología, Universidad Tecnológica de Panamá (UTP), El Dorado 0819-07289, Panama;
| | - Yamilka Díaz
- Department of Research in Virology and Biotechnology, Gorgas Memorial Institute of Health Studies, Justo Arosemena Avenue and 35st Street, Panama 0816-02593, Panama;
| | - Juan Miguel Pascale
- Unit of Diagnosis, Clinical Research and Tropical Medicine, Gorgas Memorial Institute of Health Studies, Justo Arosemena Avenue and 35st Street, Panama 0816-02593, Panama;
- Sistema Nacional de Investigación (SNI) SENACYT, Panama 0816-02852, Panama
| | - Maciej F. Boni
- Center for Infectious Disease Dynamics, Department of Biology, Pennsylvania State University, University Park, PA 16802, USA;
| | - Javier E. Sanchez-Galan
- Facultad de Ciencias y Tecnología, Universidad Tecnológica de Panamá (UTP), El Dorado 0819-07289, Panama;
- Sistema Nacional de Investigación (SNI) SENACYT, Panama 0816-02852, Panama
- Grupo de Investigaciones en Biotecnología, Bioinformática y Biología de Sistemas (GIBBS), Facultad de Ingenieria de Sistemas Computacionales, Universidad Tecnológica de Panamá (UTP), El Dorado 0819-07289, Panama
- Correspondence: ; Tel.: +507-560-3933
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Fourié T, El Bara A, Dubot-Pérès A, Grard G, Briolant S, Basco LK, Ouldabdallahi Moukah M, Leparc-Goffart I. Emergence of dengue virus serotype 2 in Mauritania and molecular characterization of its circulation in West Africa. PLoS Negl Trop Dis 2021; 15:e0009829. [PMID: 34695119 PMCID: PMC8568173 DOI: 10.1371/journal.pntd.0009829] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2020] [Revised: 11/04/2021] [Accepted: 09/21/2021] [Indexed: 01/01/2023] Open
Abstract
The number of sporadic and epidemic dengue fever cases have reportedly been increasing in recent years in some West African countries, such as Senegal and Mali. The first epidemic of laboratory-confirmed dengue occurred in Nouakchott, the capital city of Mauritania situated in the Saharan desert, in 2014. On-site diagnosis of dengue fever was established using a rapid diagnostic test for dengue. In parallel, the presence of Aedes aegypti mosquitoes in the city was confirmed. The initial diagnosis was confirmed by RT-PCR, which showed that all samples from the 2014 dengue epidemic in Nouakchott were dengue virus serotype 2 (DENV-2). The whole genome or envelope protein gene of these strains, together with other DENV-2 strains obtained from travelers returning from West African countries to France between 2016 and 2019 (including two Mauritanian strains in 2017 and 2018), were sequenced. Phylogenetic analysis suggested a recent emergence of an epidemic strain from the cosmopolitan genotype belonging to West African cosmopolitan lineage II, which is genetically distinct from African sylvatic genotype. The origin of this DENV-2 lineage is still unknown, but our data seem to suggest a recent and rapid dispersion of the epidemic strain throughout the region. More complete genome sequences of West African DENV-2 are required for a better understanding of the dynamics of its circulation. Arboviral surveillance and outbreak forecasting are urgently needed in West Africa. In Africa, dengue viruses 1 to 4 are transmitted to primates by Aedes mosquitoes in a sylvatic cycle or an urban/epidemic cycle involving humans. Infection in humans may be asymptomatic or may range from mild flu-like illness to severe hemorrhagic fever. The dengue viruses have a pantropical distribution, mostly in urbanized areas where vectors have become well adapted. This report shows dengue can also emerge in desert areas, as seen for the first time in an outbreak in 2014 in Nouakchott, Mauritania, where climatic, environmental, and human behavioral changes favor the emergence of Aedes mosquitoes. Dengue virus 2 was found in multiple human samples collected during the outbreak. Genomic analysis of dengue virus 2 isolates from the Mauritanian outbreak and from infected travelers revealed the rapid emergence of a specific “West African epidemic strain” of the virus throughout West Africa during the last decade, which is distinct from other strains found elsewhere and from historical or sylvatic strains. More genomic data would help us understand the circulation of dengue virus in West Africa, to help forecast and mitigate outbreaks in this region.
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Affiliation(s)
- Toscane Fourié
- Unité des Virus Emergents (UVE), Aix Marseille Université - IRD 190—INSERM 1207, Marseille, France
- Institut de Recherche Biomédicale des Armées, Marseille, France
| | - Ahmed El Bara
- Institut National de Recherche en Santé Publique, Nouakchott, Mauritania
| | - Audrey Dubot-Pérès
- Unité des Virus Emergents (UVE), Aix Marseille Université - IRD 190—INSERM 1207, Marseille, France
| | - Gilda Grard
- Unité des Virus Emergents (UVE), Aix Marseille Université - IRD 190—INSERM 1207, Marseille, France
- Institut de Recherche Biomédicale des Armées, Marseille, France
| | - Sébastien Briolant
- Institut de Recherche Biomédicale des Armées, Marseille, France
- Aix Marseille Univ, IRD, AP-HM, SSA, VITROME, Marseille, France
- IHU—Méditerranée Infection, Marseille, France
| | - Leonardo K. Basco
- Aix Marseille Univ, IRD, AP-HM, SSA, VITROME, Marseille, France
- IHU—Méditerranée Infection, Marseille, France
| | - Mohamed Ouldabdallahi Moukah
- Unité de Recherche Génomes et Milieux, Faculté des Sciences et Techniques, Université de Nouakchott Al-Aasriya, Nouakchott, Mauritania
- Initiative mauritanienne pour la lutte contre les maladies endémiques “MEDCINGO” Nouakchott, Mauritania
| | - Isabelle Leparc-Goffart
- Unité des Virus Emergents (UVE), Aix Marseille Université - IRD 190—INSERM 1207, Marseille, France
- Institut de Recherche Biomédicale des Armées, Marseille, France
- * E-mail:
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Gao P, Pilot E, Rehbock C, Gontariuk M, Doreleijers S, Wang L, Krafft T, Martens P, Liu Q. Land use and land cover change and its impacts on dengue dynamics in China: A systematic review. PLoS Negl Trop Dis 2021; 15:e0009879. [PMID: 34669704 PMCID: PMC8559955 DOI: 10.1371/journal.pntd.0009879] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 11/01/2021] [Accepted: 10/05/2021] [Indexed: 12/29/2022] Open
Abstract
Background Dengue is a prioritized public health concern in China. Because of the larger scale, more frequent and wider spatial distribution, the challenge for dengue prevention and control has increased in recent years. While land use and land cover (LULC) change was suggested to be associated with dengue, relevant research has been quite limited. The “Open Door” policy introduced in 1978 led to significant LULC change in China. This systematic review is the first to review the studies on the impacts of LULC change on dengue dynamics in China. This review aims at identifying the research evidence, research gaps and provide insights for future research. Methods A systematic literature review was conducted following the PRISMA protocol. The combinations of search terms on LULC, dengue and its vectors were searched in the databases PubMed, Web of Science, and Baidu Scholar. Research conducted on China published from 1978 to December 2019 and written in English or Chinese was selected for further screening. References listed in articles meeting the inclusion criteria were also reviewed and included if again inclusion criteria were met to minimize the probability of missing relevant research. Results 28 studies published between 1978 and 2017 were included for the full review. Guangdong Province and southern Taiwan were the major regional foci in the literature. The majority of the reviewed studies observed associations between LULC change factors and dengue incidence and distribution. Conflictive evidence was shown in the studies about the impacts of green space and blue space on dengue in China. Transportation infrastructure and urbanization were repeatedly suggested to be positively associated with dengue incidence and spread. The majority of the studies reviewed considered meteorological and sociodemographic factors when they analyzed the effects of LULC change on dengue. Primary and secondary remote sensing (RS) data were the primary source for LULC variables. In 21 of 28 studies, a geographic information system (GIS) was used to process data of environmental variables and dengue cases and to perform spatial analysis of dengue. Conclusions The effects of LULC change on the dynamics of dengue in China varied in different periods and regions. The application of RS and GIS enriches the means and dimensions to explore the relations between LULC change and dengue. Further comprehensive regional research is necessary to assess the influence of LULC change on local dengue transmission to provide practical advice for dengue prevention and control. Dengue is a major public health concern in China. The rapid development of urbanization along with climate change increases the challenge for dengue prevention and control. Previous research has mainly focused on the meteorological variables whereas land use and land cover (LULC) change received comparatively less attention. Our review identified that the regional research hotspots of dengue epidemics in China were Guangdong Province and southern Taiwan. Though inconsistent, most included studies somehow observed associations between at least one of the LULC change factors and dengue. A geographical information system (GIS) was widely used to perform spatial analysis in the selected literature. Its application provided a novel view to describe the relationships between environmental factors and the situation of dengue, which enabled scholars to explore more characteristics of dengue transmission. Meanwhile, the use of remote sensing (RS) enriched the means of environmental monitoring. However, there are research gaps in the area of dengue and LULC change, such as the less consideration of dengue vector study, the lack of interplays between factors, and the lack of considering interventions and policies. Furthermore, because of different research settings, results from these studies were difficult to compare. Thus, further comprehensive and comparable investigations are necessary to better understand the effects of LULC change on dengue in China. This review is the first to expound the studies on the associations between LULC change and dengue dynamics in China. It demonstrates the findings and methodologies and provided insights for future research.
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Affiliation(s)
- Panjun Gao
- Department of Health, Ethics & Society, CAPHRI Care and Public Health Research Institute, Faculty of Health, Medicine and Life Sciences, Maastricht University, Maastricht, The Netherlands
| | - Eva Pilot
- Department of Health, Ethics & Society, CAPHRI Care and Public Health Research Institute, Faculty of Health, Medicine and Life Sciences, Maastricht University, Maastricht, The Netherlands
| | - Cassandra Rehbock
- Department of Health, Ethics & Society, CAPHRI Care and Public Health Research Institute, Faculty of Health, Medicine and Life Sciences, Maastricht University, Maastricht, The Netherlands
| | - Marie Gontariuk
- Department of Health, Ethics & Society, CAPHRI Care and Public Health Research Institute, Faculty of Health, Medicine and Life Sciences, Maastricht University, Maastricht, The Netherlands
| | - Simone Doreleijers
- Department of Health, Ethics & Society, CAPHRI Care and Public Health Research Institute, Faculty of Health, Medicine and Life Sciences, Maastricht University, Maastricht, The Netherlands
| | - Li Wang
- Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China
| | - Thomas Krafft
- Department of Health, Ethics & Society, CAPHRI Care and Public Health Research Institute, Faculty of Health, Medicine and Life Sciences, Maastricht University, Maastricht, The Netherlands
| | - Pim Martens
- Maastricht Sustainability Institute (MSI), Maastricht University, Maastricht, The Netherlands
| | - Qiyong Liu
- State Key Laboratory of Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
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21
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Cuenca PR, Key S, Jumail A, Surendra H, Ferguson HM, Drakeley CJ, Fornace K. Epidemiology of the zoonotic malaria Plasmodium knowlesi in changing landscapes. Adv Parasitol 2021; 113:225-286. [PMID: 34620384 DOI: 10.1016/bs.apar.2021.08.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Within the past two decades, incidence of human cases of the zoonotic malaria Plasmodium knowlesi has increased markedly. P. knowlesi is now the most common cause of human malaria in Malaysia and threatens to undermine malaria control programmes across Southeast Asia. The emergence of zoonotic malaria corresponds to a period of rapid deforestation within this region. These environmental changes impact the distribution and behaviour of the simian hosts, mosquito vector species and human populations, creating new opportunities for P. knowlesi transmission. Here, we review how landscape changes can drive zoonotic disease emergence, examine the extent and causes of these changes across Southeast and identify how these mechanisms may be impacting P. knowlesi dynamics. We review the current spatial epidemiology of reported P. knowlesi infections in people and assess how these demographic and environmental changes may lead to changes in transmission patterns. Finally, we identify opportunities to improve P. knowlesi surveillance and develop targeted ecological interventions within these landscapes.
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Affiliation(s)
- Pablo Ruiz Cuenca
- Faculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, United Kingdom
| | - Stephanie Key
- Faculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, United Kingdom
| | | | - Henry Surendra
- Eijkman-Oxford Clinical Research Unit, Jakarta, Indonesia; Centre for Tropical Medicine, Faculty of Medicine, Public Health and Nursing, Universitas Gadjah Mada, Yogyakarta, Indonesia
| | - Heather M Ferguson
- Institute of Biodiversity, Animal Health and Comparative Medicine, University of Glasgow, Glasgow, Scotland, United Kingdom
| | - Chris J Drakeley
- Faculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, United Kingdom
| | - Kimberly Fornace
- Faculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, United Kingdom; Institute of Biodiversity, Animal Health and Comparative Medicine, University of Glasgow, Glasgow, Scotland, United Kingdom.
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22
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Näslund J, Ahlm C, Islam K, Evander M, Bucht G, Lwande OW. Emerging Mosquito-Borne Viruses Linked to Aedes aegypti and Aedes albopictus: Global Status and Preventive Strategies. Vector Borne Zoonotic Dis 2021; 21:731-746. [PMID: 34424778 DOI: 10.1089/vbz.2020.2762] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Emerging mosquito-borne viruses continue to cause serious health problems and economic burden among billions of people living in and near the tropical belt of the world. The highly invasive mosquito species Aedes aegypti and Aedes albopictus have successively invaded and expanded their presence as key vectors of Chikungunya virus, dengue virus, yellow fever virus, and Zika virus, and that has consecutively led to frequent outbreaks of the corresponding viral diseases. Of note, these two mosquito species have gradually adapted to the changing weather and environmental conditions leading to a shift in the epidemiology of the viral diseases, and facilitated their establishment in new ecozones inhabited by immunologically naive human populations. Many abilities of Ae. aegypti and Ae. albopictus, as vectors of significant arbovirus pathogens, may affect the infection and transmission rates after a bloodmeal, and may influence the vector competence for either virus. We highlight that many collaborating risk factors, for example, the global transportation systems may result in sporadic and more local outbreaks caused by mosquito-borne viruses related to Ae. aegypti and/or Ae. albopictus. Those local outbreaks could in synergy grow and produce larger epidemics with pandemic characters. There is an urgent need for improved surveillance of vector populations, human cases, and reliable prediction models. In summary, we recommend new and innovative strategies for the prevention of these types of infections.
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Affiliation(s)
- Jonas Näslund
- Swedish Defence Research Agency, CBRN, Defence and Security, Umeå, Sweden
| | - Clas Ahlm
- Department of Clinical Microbiology, Umeå University, Umea, Sweden.,Arctic Research Centre at Umeå University, Umea, Sweden
| | - Koushikul Islam
- Department of Clinical Microbiology, Umeå University, Umea, Sweden
| | - Magnus Evander
- Department of Clinical Microbiology, Umeå University, Umea, Sweden.,Arctic Research Centre at Umeå University, Umea, Sweden
| | - Göran Bucht
- Department of Clinical Microbiology, Umeå University, Umea, Sweden
| | - Olivia Wesula Lwande
- Department of Clinical Microbiology, Umeå University, Umea, Sweden.,Arctic Research Centre at Umeå University, Umea, Sweden
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23
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Bennett KL, McMillan WO, Loaiza JR. The genomic signal of local environmental adaptation in Aedes aegypti mosquitoes. Evol Appl 2021; 14:1301-1313. [PMID: 34025769 PMCID: PMC8127705 DOI: 10.1111/eva.13199] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Revised: 12/22/2020] [Accepted: 01/21/2021] [Indexed: 12/19/2022] Open
Abstract
Local adaptation is important when predicting arthropod-borne disease risk because of its impacts on vector population fitness and persistence. However, the extent that vector populations are adapted to the environment generally remains unknown. Despite low population structure and high gene flow in Aedes aegypti mosquitoes across Panama, excepting the province of Bocas del Toro, we identified 128 candidate SNPs, clustered within 17 genes, which show a strong genomic signal of local environmental adaptation. This putatively adaptive variation occurred across fine geographical scales with the composition and frequency of candidate adaptive loci differing between populations in wet tropical environments along the Caribbean coast and dry tropical conditions typical of the Pacific coast. Temperature and vegetation were important predictors of adaptive genomic variation in Ae. aegypti with several potential areas of local adaptation identified. Our study lays the foundations of future work to understand whether environmental adaptation in Ae. aegypti impacts the arboviral disease landscape and whether this could either aid or hinder efforts of population control.
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Affiliation(s)
- Kelly L. Bennett
- Smithsonian Tropical Research InstituteBalboa AnconRepublic of Panama
| | - W. Owen McMillan
- Smithsonian Tropical Research InstituteBalboa AnconRepublic of Panama
| | - Jose R. Loaiza
- Smithsonian Tropical Research InstituteBalboa AnconRepublic of Panama
- Instituto de Investigaciones Científicas y Servicios de Alta TecnologíaPanamáRepublic of Panama
- Programa Centroamericano de Maestría en EntomologíaUniversidad de PanamáPanamáRepublic of Panama
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24
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Echeverry-Cárdenas E, López-Castañeda C, Carvajal-Castro JD, Aguirre-Obando OA. Potential geographic distribution of the tiger mosquito Aedes albopictus (Skuse, 1894) (Diptera: Culicidae) in current and future conditions for Colombia. PLoS Negl Trop Dis 2021; 15:e0008212. [PMID: 33974620 PMCID: PMC8112644 DOI: 10.1371/journal.pntd.0008212] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Accepted: 03/25/2021] [Indexed: 02/01/2023] Open
Abstract
In Colombia, little is known on the distribution of the Asian mosquito Aedes albopictus, main vector of dengue, chikungunya, and Zika in Asia and Oceania. Therefore, this work sought to estimate its current and future potential geographic distribution under the Representative Concentration Paths (RCP) 2.6 and 8.5 emission scenarios by 2050 and 2070, using ecological niche models. For this, predictions were made in MaxEnt, employing occurrences of A. albopictus from their native area and South America and bioclimatic variables of these places. We found that, from their invasion of Colombia to the most recent years, A. albopictus is present in 47% of the country, in peri-urban (20%), rural (23%), and urban (57%) areas between 0 and 1800 m, with Antioquia and Valle del Cauca being the departments with most of the records. Our ecological niche modelling for the currently suggests that A. albopictus is distributed in 96% of the Colombian continental surface up to 3000 m (p < 0.001) putting at risk at least 48 million of people that could be infected by the arboviruses that this species transmits. Additionally, by 2050 and 2070, under RCP 2.6 scenario, its distribution could cover to nearly 90% of continental extension up to 3100 m (≈55 million of people at risk), while under RCP 8.5 scenario, it could decrease below 60% of continental extension, but expand upward to 3200 m (< 38 million of people at risk). These results suggest that, currently in Colombia, A. albopictus is found throughout the country and climate change could diminish eventually its area of distribution, but increase its altitudinal range. In Colombia, surveillance and vector control programs must focus their attention on this vector to avoid complications in the national public health setting.
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Affiliation(s)
- Emmanuel Echeverry-Cárdenas
- Escuela de Investigación en Biomatemáticas, Universidad del Quindío, Armenia, Quindío, Colombia
- Programa de Biología, Universidad del Quindío, Armenia, Quindío, Colombia
| | | | - Juan D. Carvajal-Castro
- Instituto de Investigación de Recursos Biológicos Alexander von Humboldt, Bogotá D.C, Colombia
- Department of Biological Sciences, St. John’s University, Queens, New York, United States of America
| | - Oscar Alexander Aguirre-Obando
- Escuela de Investigación en Biomatemáticas, Universidad del Quindío, Armenia, Quindío, Colombia
- Programa de Biología, Universidad del Quindío, Armenia, Quindío, Colombia
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Bennett KL, McMillan WO, Enríquez V, Barraza E, Díaz M, Baca B, Whiteman A, Cerro Medina J, Ducasa M, Gómez Martínez C, Almanza A, Rovira JR, Loaiza JR. The role of heterogenous environmental conditions in shaping the spatiotemporal distribution of competing Aedes mosquitoes in Panama: implications for the landscape of arboviral disease transmission. Biol Invasions 2021; 23:1933-1948. [PMID: 34776763 PMCID: PMC8550678 DOI: 10.1007/s10530-021-02482-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Accepted: 02/06/2021] [Indexed: 11/12/2022]
Abstract
Monitoring the invasion process of the Asian tiger mosquito Aedes albopictus and its interaction with the contender Aedes aegypti, is critical to prevent and control the arthropod-borne viruses (i.e., Arboviruses) they transmit to humans. Generally, the superior ecological competitor Ae. albopictus displaces Ae. aegypti from most geographic areas, with the combining factors of biology and environment influencing the competitive outcome. Nonetheless, detailed studies asserting displacement come largely from sub-tropical areas, with relatively less effort being made in tropical environments, including no comprehensive research about Aedes biological interactions in Mesoamerica. Here, we examine contemporary and historical mosquito surveillance data to assess the role of shifting abiotic conditions in shaping the spatiotemporal distribution of competing Aedes species in the Republic of Panama. In accordance with prior studies, we show that Ae. albopictus has displaced Ae. aegypti under suboptimal wet tropical climate conditions and more vegetated environments within the southwestern Azuero Peninsula. Conversely, in the eastern Azuero Peninsula, Ae. aegypti persists with Ae. albopictus under optimal niche conditions in a dry and more seasonal tropical climate. While species displacement was stable over the course of two years, the presence of both species generally appears to fluctuate in tandem in areas of coexistence. Aedes albopictus was always more frequently found and abundant regardless of location and climatic season. The heterogenous environmental conditions of Panama shape the competitive outcome and micro-geographic distribution of Aedes mosquitoes, with potential consequences for the transmission dynamics of urban and sylvatic zoonotic diseases. SUPPLEMENTARY INFORMATION The online version of this article (10.1007/s10530-021-02482-y).
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Affiliation(s)
- Kelly L. Bennett
- Smithsonian Tropical Research Institute, Balboa Ancón, Republic of Panama
| | - W. Owen McMillan
- Smithsonian Tropical Research Institute, Balboa Ancón, Republic of Panama
| | | | | | | | | | - Ari Whiteman
- Smithsonian Tropical Research Institute, Balboa Ancón, Republic of Panama
| | | | - Madeleine Ducasa
- Programa Centroamericano de Maestría en Entomología, Universidad de Panamá, Panamá, República de Panamá
| | - Carmelo Gómez Martínez
- Programa Centroamericano de Maestría en Entomología, Universidad de Panamá, Panamá, República de Panamá
- Instituto de Investigaciones Científicas Y Servicios de Alta Tecnología, Panamá, República de Panamá
| | - Alejandro Almanza
- Programa Centroamericano de Maestría en Entomología, Universidad de Panamá, Panamá, República de Panamá
- Instituto de Investigaciones Científicas Y Servicios de Alta Tecnología, Panamá, República de Panamá
| | - Jose R. Rovira
- Smithsonian Tropical Research Institute, Balboa Ancón, Republic of Panama
- Instituto de Investigaciones Científicas Y Servicios de Alta Tecnología, Panamá, República de Panamá
| | - Jose R. Loaiza
- Smithsonian Tropical Research Institute, Balboa Ancón, Republic of Panama
- Programa Centroamericano de Maestría en Entomología, Universidad de Panamá, Panamá, República de Panamá
- Instituto de Investigaciones Científicas Y Servicios de Alta Tecnología, Panamá, República de Panamá
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Maddipati VC, Mittal L, Mantipally M, Asthana S, Bhattacharyya S, Gundla R. A Review on the Progress and Prospects of Dengue Drug Discovery Targeting NS5 RNA- Dependent RNA Polymerase. Curr Pharm Des 2021; 26:4386-4409. [PMID: 32445444 DOI: 10.2174/1381612826666200523174753] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2020] [Accepted: 04/15/2020] [Indexed: 02/08/2023]
Abstract
Dengue virus (DENV) infection threatens the health and wellbeing of almost 100 million people in the world. Vectored by mosquitoes, DENV may cause a severe disease in human hosts called Dengue hemorrhagic fever (DHF)/Dengue shock syndrome (DSS), which is not preventable by any known drug. In the absence of a universally-accepted vaccine, a drug capable of inhibiting DENV multiplication is an urgent and unmet clinical need. Here we summarize inhibitory strategies by targeting either host biochemical pathways or virus-encoded proteins. A variety of approaches have been generated to design Directly-acting anti-virals or DAAs targeting different DENV proteins, with diverse success. Among them, DAAs targeting genome replicating viral enzymes have proven effective against many viruses including, Human Immuno-deficiency Virus and Hepatitis C Virus. DAAs may be derived either from existing compound libraries of novel molecules and plant secondary metabolites or devised through Computer-aided Drug design (CADD) methods. Here, we focus on compounds with reported DAA-activity against the DENV RNA-dependent RNA polymerase (RdRp), which replicate the viral RNA genome. The structure-activity relationship (SAR) and toxicity of the natural compounds, including secondary plant metabolites, have been discussed in detail. We have also tabulated novel compounds with known anti-RdRp activity. We concluded with a list of DAAs for which a co-crystal structure with RdRp is reported. Promising hit compounds are often discarded due to poor selectivity or unsuitable pharmacokinetics. We hope this review will provide a useful reference for further studies on the development of an anti-DENV drug.
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Affiliation(s)
- Venkatanarayana C Maddipati
- Department of Chemistry, School of Science, GITAM (Deemed to be University), Hyderabad 502329, Telangana, India
| | - Lovika Mittal
- Translational Health Science and Technology Institute (THSTI), NCR Biotech Science Cluster, 3rdMilestone, Faridabad-Gurugram Expressway, Faridabad - 121001, Haryana, India
| | - Manohar Mantipally
- Department of Chemistry, School of Science, GITAM (Deemed to be University), Hyderabad 502329, Telangana, India
| | - Shailendra Asthana
- Translational Health Science and Technology Institute (THSTI), NCR Biotech Science Cluster, 3rdMilestone, Faridabad-Gurugram Expressway, Faridabad - 121001, Haryana, India
| | - Sankar Bhattacharyya
- Translational Health Science and Technology Institute (THSTI), NCR Biotech Science Cluster, 3rdMilestone, Faridabad-Gurugram Expressway, Faridabad - 121001, Haryana, India
| | - Rambabu Gundla
- Department of Chemistry, School of Science, GITAM (Deemed to be University), Hyderabad 502329, Telangana, India
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Saleh F, Kitau J, Konradsen F, Kampango A, Abassi R, Schiøler KL. Epidemic risk of arboviral diseases: Determining the habitats, spatial-temporal distribution, and abundance of immature Aedes aegypti in the Urban and Rural areas of Zanzibar, Tanzania. PLoS Negl Trop Dis 2020; 14:e0008949. [PMID: 33284806 DOI: 10.1371/journal.pntd.0008949] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 12/17/2020] [Accepted: 11/04/2020] [Indexed: 12/30/2022] Open
Abstract
Background In Zanzibar, little is known about the arboviral disease vector Aedes aegypti in terms of abundance, spatio-temporal distribution of its larval habitats or factors associated with its proliferation. Effective control of the vector requires knowledge on ecology and habitat characteristics and is currently the only available option for reducing the risk of arboviral epidemics in the island nation of Zanzibar. Methodology We conducted entomological surveys in households and surrounding compounds from February to May 2018 in the urban (Mwembemakumbi and Chumbuni) and rural (Chuini and Kama) Shehias (lowest government administrative unit) situated in the Urban-West region of Unguja island, Zanzibar. Larvae and pupae were collected, transported to the insectary, reared to adult, and identified to species level. Characteristics and types of water containers were also recorded on site. Generalized linear mixed models with binomial and negative binomial distributions were applied to determine factors associated with presence of Ae. aegypti immatures (i.e. both larvae and pupae) or pupae, alone and significant predictors of the abundance of immature Ae. aegypti or pupae, respectively. Results The survey provided evidence of widespread presence and abundance of Ae. aegypti mosquitoes in both urban and rural settings of Unguja Island. Interestingly, rural setting had higher numbers of infested containers, all immatures, and pupae than urban setting. Likewise, higher House and Breteau indices were recorded in rural compared to the urban setting. There was no statistically significant difference in Stegomyia indices between seasons across settings. Plastics, metal containers and car tires were identified as the most productive habitats which collectively produced over 90% of all Ae. aegypti pupae. Water storage, sun exposure, vegetation, and organic matter were significant predictors of the abundance of immature Ae. aegypti. Conclusions Widespread presence and abundance of Ae. aegypti were found in rural and urban areas of Unguja, the main island of Zanzibar. Information on productive habitats and predictors of colonization of water containers are important for the development of a routine Aedes surveillance system and targeted control interventions in Zanzibar and similar settings. Dengue is considered the most important mosquito-borne viral disease and a global public health threat. In recent decades, large scale epidemics of dengue have occurred across sub-Saharan Africa including mainland Tanzania. Aedes aegypti is identified as the principal vector for dengue transmission in most affected countries. In the absence of antiviral treatment and as a dengue vaccine is not readily available; dengue prevention depends largely on vector control. As mosquitoes develop resistance towards commonly applied chemical insecticides, environmental management targeting the destruction of larval habitats is recommended. In Zanzibar, little is known about Ae. aegypti in terms of type, magnitude, or distribution of its larval habitats. In this study, we identified the main larval habitats of Ae. aegypti, their seasonal variations and factors contributing to Ae. aegypti abundance across urban and rural settings of Unguja Island in Zanzibar. We found widespread presence and abundance of the vector with plastic and metal containers as well as car tires identified as the most important larval habitats. Season, location of water container, water storage, sun exposure, presence of vegetation and organic matter were among the factors associated with high Ae. aegypti abundance. This study is the first to document widespread occurrence and distribution of Ae. aegypti in Zanzibar and highlights the need for the establishment of a nation-wide Aedes surveillance program to guide the development and monitoring of targeted, context specific vector control interventions for prevention of dengue and other arboviral epidemics. Aedes surveillance involves periodic inspection of households and surrounding environments for presence of larvae/pupae in water-holding containers which are then targeted for larval source reduction, as well as monitoring of adult mosquito populations.
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Schultes OL, Morais MHF, Cunha MDCM, Sobral A, Caiaffa WT. Spatial analysis of dengue incidence and Aedes aegypti ovitrap surveillance in Belo Horizonte, Brazil. Trop Med Int Health 2020; 26:237-255. [PMID: 33159826 DOI: 10.1111/tmi.13521] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
OBJECTIVES Understanding the intra-urban spatial dynamics of Aedes aegypti and dengue transmission is important to effectively guide vector control. Ovitraps are a sensitive, cost-effective vector surveillance tool, yet few longitudinal studies have evaluated ovitrap indices and dengue occurrence. We aimed to assess the spatial patterns of dengue incidence and Ae. aegypti ovitrap positivity index (OPI) over time and to examine the spatial relationship between these two variables. METHODS This study used 12 years (2007-2018) of dengue case records and biweekly Ae. aegypti ovitrap data in Belo Horizonte, Brazil. We aggregated data by year and health centre catchment area (n = 152) and used both univariate and bivariate global Moran's I statistic and LISA to evaluate spatial clustering. RESULTS Annual dengue incidence ranged from 18 to 6262/100 000 residents and displayed spatial autocorrelation in 10/12 years, with shifting areas of high incidence. Annual OPI ranged from 35.7 to 47.6% and was clustered in all study years, but unlike dengue had consistent spatial patterns over time. Bivariate analysis found both positive (6/12 years) and negative (1/12 years) spatial associations between the two variables. CONCLUSIONS Low detected presence of Ae. aegypti was not a limiting factor in dengue transmission. However, stable spatial distribution of OPI suggests that certain areas may have persistent breeding sites. Future research should identify factors related to persistent Ae. aegypti hotspots to better guide vector management. Vector control efforts should be paired with additional data on population immunity, circulating serotypes and urban factors to better predict and control outbreaks.
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Affiliation(s)
- Olivia Lang Schultes
- Urban Health Observatory of Belo Horizonte, Federal University of Minas Gerais, Brazil
| | | | | | - Andréa Sobral
- National School of Public Health, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
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Buxton M, Machekano H, Gotcha N, Nyamukondiwa C, Wasserman RJ. Are Vulnerable Communities Thoroughly Informed on Mosquito Bio-Ecology and Burden? Int J Environ Res Public Health 2020; 17:ijerph17218196. [PMID: 33171954 PMCID: PMC7672552 DOI: 10.3390/ijerph17218196] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Revised: 09/24/2020] [Accepted: 09/25/2020] [Indexed: 11/25/2022]
Abstract
Mosquitoes account for a significant burden of morbidity and mortality globally. Despite evidence of (1) imminent anthropogenic climate and environmental changes, (2) vector-pathogen spatio-temporal dynamics and (3) emerging and re-emerging mosquito borne infections, public knowledge on mosquito bio-ecology remain scant. In particular, knowledge, attitude and practices (KAPs) on mosquitoes are often neglected despite otherwise expensive remedial efforts against consequent infections and other indirect effects associated with disease burden. To gather baseline KAPs that identify gaps for optimising vector-borne disease control, we surveyed communities across endemic and non-endemic malaria sub-districts (Botswana). The study revealed limited knowledge of mosquitoes and their infections uniformly across endemic and non-endemic areas. In addition, a significant proportion of respondents were concerned about mosquito burdens, although their level of personal, indoor and environmental protection practices varied significantly across sub-districts. Given the limited knowledge displayed by the communities, this study facilitates bridging KAP gaps to minimise disease burdens by strengthening public education. Furthermore, it provides a baseline for future studies in mosquito bio-ecology and desirable control practices across differential spheres of the rural–urban lifestyle, with implications for enhanced livelihoods as a consequence of improved public health.
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Benelli G, Petrelli R, Canale A. Arthropod-Borne Disease Control at a Glance: What's New on Drug Development? Molecules 2020; 25:E5175. [PMID: 33172077 DOI: 10.3390/molecules25215175] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Accepted: 11/04/2020] [Indexed: 12/17/2022] Open
Abstract
Discovering and validating effective drugs to manage arthropod-borne diseases (ABD) is a timely and important research challenge with major impacts on real-world control programs at the time of quick resistance development in the targeted pathogens. This editorial highlights major research advances in the development of drugs for the control of vector-borne diseases, with a significant focus on malaria, Chagas disease, dengue, human African trypanosomiasis, leishmaniasis, and Zika. Broad reviews providing new insights on ABD recently published in Molecules have also been covered in “The Editors’ pick” section.
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Gittens RA, Almanza A, Bennett KL, Mejía LC, Sanchez-Galan JE, Merchan F, Kern J, Miller MJ, Esser HJ, Hwang R, Dong M, De León LF, Álvarez E, Loaiza JR. Proteomic fingerprinting of Neotropical hard tick species (Acari: Ixodidae) using a self-curated mass spectra reference library. PLoS Negl Trop Dis 2020; 14:e0008849. [PMID: 33108372 PMCID: PMC7647123 DOI: 10.1371/journal.pntd.0008849] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 11/06/2020] [Accepted: 10/02/2020] [Indexed: 02/01/2023] Open
Abstract
Matrix-assisted laser desorption/ionization (MALDI) time-of-flight mass spectrometry is an analytical method that detects macromolecules that can be used for proteomic fingerprinting and taxonomic identification in arthropods. The conventional MALDI approach uses fresh laboratory-reared arthropod specimens to build a reference mass spectra library with high-quality standards required to achieve reliable identification. However, this may not be possible to accomplish in some arthropod groups that are difficult to rear under laboratory conditions, or for which only alcohol preserved samples are available. Here, we generated MALDI mass spectra of highly abundant proteins from the legs of 18 Neotropical species of adult field-collected hard ticks, several of which had not been analyzed by mass spectrometry before. We then used their mass spectra as fingerprints to identify each tick species by applying machine learning and pattern recognition algorithms that combined unsupervised and supervised clustering approaches. Both Principal Component Analysis (PCA) and Linear Discriminant Analysis (LDA) classification algorithms were able to identify spectra from different tick species, with LDA achieving the best performance when applied to field-collected specimens that did have an existing entry in a reference library of arthropod protein spectra. These findings contribute to the growing literature that ascertains mass spectrometry as a rapid and effective method to complement other well-established techniques for taxonomic identification of disease vectors, which is the first step to predict and manage arthropod-borne pathogens.
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Affiliation(s)
- Rolando A. Gittens
- Centro de Biodiversidad y Descubrimiento de Drogas, Instituto de Investigaciones Científicas y Servicios de Alta Tecnología (INDICASAT AIP), Panama, Republic of Panama
- Centro de Neurociencias, INDICASAT AIP, Panama, Republic of Panama
| | - Alejandro Almanza
- Centro de Biodiversidad y Descubrimiento de Drogas, Instituto de Investigaciones Científicas y Servicios de Alta Tecnología (INDICASAT AIP), Panama, Republic of Panama
| | - Kelly L. Bennett
- Centro de Biodiversidad y Descubrimiento de Drogas, Instituto de Investigaciones Científicas y Servicios de Alta Tecnología (INDICASAT AIP), Panama, Republic of Panama
- Smithsonian Tropical Research Institute, Panama, Republic of Panama
| | - Luis C. Mejía
- Centro de Biodiversidad y Descubrimiento de Drogas, Instituto de Investigaciones Científicas y Servicios de Alta Tecnología (INDICASAT AIP), Panama, Republic of Panama
- Smithsonian Tropical Research Institute, Panama, Republic of Panama
| | - Javier E. Sanchez-Galan
- Centro de Biodiversidad y Descubrimiento de Drogas, Instituto de Investigaciones Científicas y Servicios de Alta Tecnología (INDICASAT AIP), Panama, Republic of Panama
- Grupo de Investigación en Biotecnología, Bioinformática y Biología de Sistemas, Facultad de Ingeniería de Sistemas Computacionales, Universidad Tecnológica de Panamá, Panama, Republic of Panama
| | - Fernando Merchan
- Grupo de Investigación en Sistemas de Comunicaciones Digitales Avanzados, Facultad de Ingeniería Eléctrica, Universidad Tecnológica de Panamá, Panama, Republic of Panama
| | - Jonathan Kern
- Grupo de Investigación en Sistemas de Comunicaciones Digitales Avanzados, Facultad de Ingeniería Eléctrica, Universidad Tecnológica de Panamá, Panama, Republic of Panama
- ENSEIRB-MATMECA–Bordeaux INP, France
| | - Matthew J. Miller
- Department of Anthropology, Pennsylvania State University, University Park, PA, United States of America
- University of Alaska Museum, University of Alaska Fairbanks, Fairbanks, AK, United States of America
| | - Helen J. Esser
- Department of Environmental Sciences, Wageningen University, Wageningen, the Netherlands
| | - Robert Hwang
- Department of Biology, Swarthmore College, Swarthmore, PA, United States of America
| | - May Dong
- Department of Biology, Swarthmore College, Swarthmore, PA, United States of America
| | - Luis F. De León
- Centro de Biodiversidad y Descubrimiento de Drogas, Instituto de Investigaciones Científicas y Servicios de Alta Tecnología (INDICASAT AIP), Panama, Republic of Panama
- Department of Biology, University of Massachusetts Boston, Boston, MA, United States of America
| | - Eric Álvarez
- Programa Centroamericano de Maestría en Entomología, Universidad de Panamá, Panama, Republic of Panama
| | - Jose R. Loaiza
- Centro de Biodiversidad y Descubrimiento de Drogas, Instituto de Investigaciones Científicas y Servicios de Alta Tecnología (INDICASAT AIP), Panama, Republic of Panama
- Smithsonian Tropical Research Institute, Panama, Republic of Panama
- Programa Centroamericano de Maestría en Entomología, Universidad de Panamá, Panama, Republic of Panama
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Reiskind MH, Styers DM, Hayes I, Richards SL, Doyle MS, Reed EMX, Hollingsworth B, Byrd BD. Short-Term, Large-Area Survey of Container Aedes spp. (Diptera: Culicidae): Presence and Abundance is Associated with Fine-scale Landscape Factors in North Carolina, USA. Environ Health Insights 2020; 14:1178630220952806. [PMID: 33013159 PMCID: PMC7513404 DOI: 10.1177/1178630220952806] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Accepted: 07/30/2020] [Indexed: 06/11/2023]
Abstract
Container Aedes mosquitoes are responsible for the transmission of anthroponotic and zoonotic viruses to people. The surveillance and control of these mosquitoes is an important part of public health protection and prevention of mosquito-borne disease. In this study, we surveyed 327 sites over 2 weeks in late June and early July in 2017 in North Carolina, USA for the presence and abundance of Aedes spp. eggs in an effort to better target potential Ae. aegypti collections. We examined the ability of 2 types of landscape data, Light Detection And Ranging (LIDAR) and National Land Cover Database (NLCD) to explain the presence and abundance of eggs using principal component analysis to deal with collinearity, followed by generalized linear regression. We explained variation of both egg presence and abundance for Aedes albopictus (Skuse) and Aedes triseriatus (Say) using both NLCD and LIDAR data. However, the ability to make robust predictions was limited by variation in the data. Increased sampling time and better landscape data would likely improve the predictive ability of our models, as would a better understanding of oviposition behavior.
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Affiliation(s)
- Michael H Reiskind
- Department of Entomology and Plant
Pathology, North Carolina State University, Raleigh, NC, USA
| | - Diane M Styers
- Department of Geosciences and Natural
Resources, Western Carolina University, Cullowhee, NC, USA
| | - Isaac Hayes
- Department of Geosciences and Natural
Resources, Western Carolina University, Cullowhee, NC, USA
- Department of Environmental Engineering
and Earth Sciences, Clemson University, Clemson, SC, USA
| | - Stephanie L Richards
- Department of Health Education and
Promotion, East Carolina University, Greenville, NC, USA
| | - Michael S Doyle
- Division of Public Health, Communicable
Disease Branch, North Carolina Department of Health and Human Services, 1902 Mail
Services Center, Raleigh, NC, USA
- Department of Biology, North Carolina
State University, Raleigh, NC, USA
| | - Emily MX Reed
- Department of Entomology and Plant
Pathology, North Carolina State University, Raleigh, NC, USA
| | | | - Brian D Byrd
- Environmental Health Sciences Program,
Western Carolina University, Cullowhee, NC, USA
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