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Impact of climate and mosquito vector abundance on sylvatic arbovirus circulation dynamics in Senegal

Autor(es)Althouse Benjamin M, Hanley Kathryn A, Diallo Mawlouth, Sall Amadou A, Ba Yamar, Faye Ousmane, Diallo Diawo, Watts Douglas M, Weaver Scott C, Cummings Derek A T
ResumoSylvatic arboviruses have been isolated in Senegal over the last 50 years. The ecological drivers of the pattern - frequency of virus infection in these species are largely unknown. We used time series analysis - Bayesian hierarchical count modeling on a long-term arbovirus dataset to test associations between mosquito abundance, weather variables, - the frequency of isolation of dengue, yellow fever, chikungunya, - Zika viruses. We found little correlation between mosquito abundance - viral isolations. Rainfall was a negative predictor of dengue virus (DENV) isolation but a positive predictor of Zika virus isolation. Temperature was a positive predictor of yellow fever virus (YFV) isolations but a negative predictor of DENV isolations. We found slight interference between viruses, with DENV negatively associated with concurrent YFV isolation - YFV negatively associated with concurrent isolation of chikungunya virus. These findings begin to characterize some of the ecological associations of sylvatic arboviruses with each other - climate - mosquito abundance.
ImprentaThe American Journal of Tropical Medicine and Hygiene, v. 92, n. 1, p. 88-97, 2015
Identificador do Objeto Digital10.4269/ajtmh.13-0617
DescritoresChikungunya virus - Arbovirus ; Chikungunya virus - Cytopathology ; Chikungunya virus - Pathogenesis ; Chikungunya virus - Viral infections ; Chikungunya Virus - Virus ; Chikungunya virus - Transmission ; Chikungunya virus - Chikungunya fever ; Chikungunya virus - Dengue ; Chikungunya virus - Epidemiology ; Chikungunya virus - Immunology ; Chikungunya virus - Public health ; Chikungunya virus - Zika fever
Data de Publicação:2015