High diversity of mosquito vectors in Cambodian primary schools and consequences for arbovirus transmission.

Only few data exist in Cambodia on mosquito diversity and their potential role as vectors. Many arboviruses, such as dengue and Japanese encephalitis, are endemic and mostly affect children in the country. This research sets out to evaluate vector relative abundance and diversity in primary schools...

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Main Authors: Sebastien Boyer, Sebastien Marcombe, Sony Yean, Didier Fontenille
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2020-01-01
Series:PLoS ONE
Online Access:https://doi.org/10.1371/journal.pone.0233669
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spelling doaj-b0791ab6b275497c85ebef7b37a953362021-03-03T21:49:08ZengPublic Library of Science (PLoS)PLoS ONE1932-62032020-01-01156e023366910.1371/journal.pone.0233669High diversity of mosquito vectors in Cambodian primary schools and consequences for arbovirus transmission.Sebastien BoyerSebastien MarcombeSony YeanDidier FontenilleOnly few data exist in Cambodia on mosquito diversity and their potential role as vectors. Many arboviruses, such as dengue and Japanese encephalitis, are endemic and mostly affect children in the country. This research sets out to evaluate vector relative abundance and diversity in primary schools in Cambodia in an attempt to explain the apparent burden of dengue fever, severe dengue (DEN), Japanese encephalitis (JE), other arboviral diseases and malaria among children, 15 years and under, attending selected primary schools through vector surveys. Entomological surveys were implemented in primary schools in two provinces of Cambodia to assess the potential risk of exposure of schoolchildren to mosquito vector species. Light traps and BG traps were used to collect adult mosquitoes in 24 schools during the rainy and dry seasons of 2017 and 2018 in Kampong Cham and Tboung Khmum provinces. A total of 61 species were described, including Aedes, Culex and Anopheles species. The relative abundance and biodiversity of mosquito species were dependent on the month and school. Of the 37,725 mosquitoes caught during the study, three species accounted for three-quarters of the relative abundance: Culex vishnui, Anopheles indefinitus and Culex quinquefasciatus. More importantly, nearly 90% of the mosquitoes caught in the schools were identified as potential vectors of pathogens including Japanese encephalitis, dengue, and malaria parasites. Our results showed that schools in Cambodia represent a risk for vector-borne disease transmission and highlight the importance of implementing vector control in schools in Cambodia to decrease the risk of transmission.https://doi.org/10.1371/journal.pone.0233669
collection DOAJ
language English
format Article
sources DOAJ
author Sebastien Boyer
Sebastien Marcombe
Sony Yean
Didier Fontenille
spellingShingle Sebastien Boyer
Sebastien Marcombe
Sony Yean
Didier Fontenille
High diversity of mosquito vectors in Cambodian primary schools and consequences for arbovirus transmission.
PLoS ONE
author_facet Sebastien Boyer
Sebastien Marcombe
Sony Yean
Didier Fontenille
author_sort Sebastien Boyer
title High diversity of mosquito vectors in Cambodian primary schools and consequences for arbovirus transmission.
title_short High diversity of mosquito vectors in Cambodian primary schools and consequences for arbovirus transmission.
title_full High diversity of mosquito vectors in Cambodian primary schools and consequences for arbovirus transmission.
title_fullStr High diversity of mosquito vectors in Cambodian primary schools and consequences for arbovirus transmission.
title_full_unstemmed High diversity of mosquito vectors in Cambodian primary schools and consequences for arbovirus transmission.
title_sort high diversity of mosquito vectors in cambodian primary schools and consequences for arbovirus transmission.
publisher Public Library of Science (PLoS)
series PLoS ONE
issn 1932-6203
publishDate 2020-01-01
description Only few data exist in Cambodia on mosquito diversity and their potential role as vectors. Many arboviruses, such as dengue and Japanese encephalitis, are endemic and mostly affect children in the country. This research sets out to evaluate vector relative abundance and diversity in primary schools in Cambodia in an attempt to explain the apparent burden of dengue fever, severe dengue (DEN), Japanese encephalitis (JE), other arboviral diseases and malaria among children, 15 years and under, attending selected primary schools through vector surveys. Entomological surveys were implemented in primary schools in two provinces of Cambodia to assess the potential risk of exposure of schoolchildren to mosquito vector species. Light traps and BG traps were used to collect adult mosquitoes in 24 schools during the rainy and dry seasons of 2017 and 2018 in Kampong Cham and Tboung Khmum provinces. A total of 61 species were described, including Aedes, Culex and Anopheles species. The relative abundance and biodiversity of mosquito species were dependent on the month and school. Of the 37,725 mosquitoes caught during the study, three species accounted for three-quarters of the relative abundance: Culex vishnui, Anopheles indefinitus and Culex quinquefasciatus. More importantly, nearly 90% of the mosquitoes caught in the schools were identified as potential vectors of pathogens including Japanese encephalitis, dengue, and malaria parasites. Our results showed that schools in Cambodia represent a risk for vector-borne disease transmission and highlight the importance of implementing vector control in schools in Cambodia to decrease the risk of transmission.
url https://doi.org/10.1371/journal.pone.0233669
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