Hantaviruses and the dilution effect in Southeast Asia
Kim R. BlasdellInstitut Pasteur du Cambodge, Unité de Virologie, Phnom Penh, CambodiaSergé MorandInstitut des Sciences de l'Evolution, CNRS, IRD, Université Montpellier 2, 34095, Montpellier, FranceYannick ChavalCentre de Biologie et de Gestion et des Populations (CBGP), International de Baillarguet, 34988, Montferrier sur lez, FranceVincent HerbreteauCIRAD, UR AGIRs (Animal et Gestion Intégrée des Risques), Campus International de Baillarguet, Montpellier, FranceBounneuang DouangbouphaNational Agricultural Research Centre, National Agricultural and Forestry Research Institute, Vientiane, Lao PDRSathaporn JittapalapongDepartment of Parasitology, Faculty of Veterinary Medicine, Kasetsart University, Bangkock, 10900, ThailandJean‐François CossonINRA, UMR CBGP (INRA/IRD/CIRAD/Montpellier SupAgro), Campus international de Baillarguet, 34988, Montferrier sur Lez, FrancePhilippe BuchyInstitut Pasteur du Cambodge, Unité de Virologie, Phnom Penh, Cambodia
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BackgroundUntil recently hantaviruses were poorly studied inSoutheast Asian countries. To better understand theecology of hantaviruses in Southeast Asia, we conducteda large scale serological survey of rodent species in sev-eral locations in Cambodia, Laos and Thailand. Recentarticles indicated that the dilution effect (wherebypathogen prevalence increases with decreasing biodiver-sity) applied to some American hantavirus species.Therefore we also analyzed our data to establish if anyrelationship existed between hantavirus seroprevalenceand rodent species diversity.MethodsSmall mammals were live-trapped in different habitattypes within a 20 km
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