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

Benjamin M. Althouse, Kathryn A. Hanley, Mawlouth Diallo, Amadou A. Sall, Yamar Ba, Ousmane Faye, Diawo Diallo, Douglas M. Watts, Scott C. Weaver, Derek A.T. Cummings

Research output: Contribution to journalArticle

51 Scopus citations

Abstract

Sylvatic arboviruses have been isolated in Senegal over the last 50 years. The ecological drivers of the pattern and frequency of virus infection in these species are largely unknown. We used time series analysis and Bayesian hierarchical count modeling on a long-term arbovirus dataset to test associations between mosquito abundance, weather variables, and the frequency of isolation of dengue, yellow fever, chikungunya, and Zika viruses. We found little correlation between mosquito abundance and 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 and 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 and climate and mosquito abundance.

Original languageEnglish (US)
Pages (from-to)88-97
Number of pages10
JournalAmerican Journal of Tropical Medicine and Hygiene
Volume92
Issue number1
DOIs
StatePublished - Jan 1 2015

ASJC Scopus subject areas

  • Parasitology
  • Virology
  • Infectious Diseases

Fingerprint Dive into the research topics of 'Impact of climate and mosquito vector abundance on sylvatic arbovirus circulation dynamics in senegal'. Together they form a unique fingerprint.

  • Cite this

    Althouse, B. M., Hanley, K. A., Diallo, M., Sall, A. A., Ba, Y., Faye, O., Diallo, D., Watts, D. M., Weaver, S. C., & Cummings, D. A. T. (2015). Impact of climate and mosquito vector abundance on sylvatic arbovirus circulation dynamics in senegal. American Journal of Tropical Medicine and Hygiene, 92(1), 88-97. https://doi.org/10.4269/ajtmh.13-0617