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Mendenhall I. H., Manuel M., Moorthy M., Lee T. T. M., Low D. H. W., Missé Dorothée, Gubler D. J., Ellis B. R., Ooi E. E., Pompon Julien. (2017). Peridomestic Aedes malayensis and Aedes albopictus are capable vectors of arboviruses in cities. Plos Neglected Tropical Diseases, 11 (6), e0005667 [17 p.]. ISSN 1935-2735

Fichier PDF disponible http://horizon.documentation.ird.fr/exl-doc/pleins_textes/divers17-08/010070345.pdf

Lien direct chez l'éditeur doi:10.1371/journal.pntd.0005667

Titre
Peridomestic Aedes malayensis and Aedes albopictus are capable vectors of arboviruses in cities
Année de publication2017
Type de documentArticle référencé dans le Web of Science WOS:000405080700046
AuteursMendenhall I. H., Manuel M., Moorthy M., Lee T. T. M., Low D. H. W., Missé Dorothée, Gubler D. J., Ellis B. R., Ooi E. E., Pompon Julien.
SourcePlos Neglected Tropical Diseases, 2017, 11 (6), p. e0005667 [17 p.]. p. e0005667 [17 p.] ISSN 1935-2735
RésuméBackground Dengue and chikungunya are global re-emerging mosquito-borne diseases. In Singapore, sustained vector control coupled with household improvements reduced domestic mosquito populations for the past 45 years, particularly the primary vector Aedes aegypti. However, while disease incidence was low for the first 30 years following vector control implementation, outbreaks have re-emerged in the past 15 years. Epidemiological observations point to the importance of peridomestic infection in areas not targeted by control programs. We investigated the role of vectors in peri-domestic areas. Methods We carried out entomological surveys to identify the Aedes species present in vegetated sites in highly populated areas and determine whether mosquitoes were present in open-air areas frequented by people. We compared vector competence of Aedes albopictus and Aedes malayensis with Ae. aegypti after oral infection with sympatric dengue serotype 2 and chikungunya viruses. Mosquito saliva was tested for the presence of infectious virus particles as a surrogate for transmission following oral infection. Results We identified Aedes albopictus and Aedes malayensis throughout Singapore and quantified their presence in forested and opened grassy areas. Both Ae. albopictus and Ae. malayensis can occupy sylvatic niches and were highly susceptible to both arboviruses. A majority of saliva of infected Ae. malayensis contained infectious particles for both viruses. Conclusions Our study reveals the prevalence of competent vectors in peri-domestic areas, including Ae.malayensis for which we established the vector status. Epidemics can be driven by infection foci, which are epidemiologically enhanced in the context of low herd immunity, selective pressure on arbovirus transmission and the presence of infectious asymptomatic persons, all these conditions being present in Singapore. Learning from Singapore's vector control success that reduced domestic vector populations, but has not sustainably reduced arboviral incidence, we suggest including peri-domestic vectors in the scope of vector management.
Plan de classementEntomologie médicale / Parasitologie / Virologie [052] ; Urbanisation et sociétés urbaines [102]
Descr. géo.SINGAPOUR
LocalisationFonds IRD [F B010070345]
Identifiant IRDfdi:010070345
Lien permanenthttp://www.documentation.ird.fr/hor/fdi:010070345

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