Natural enzootic vectors of Venezuelan equine encephalitis virus, Magdalena Valley, Colombia

Cristina Ferro, Jorge Boshell, Abelardo C. Moncayo, Marta Gonzalez, Marta L. Ahumada, Wenli Kang, Scott C. Weaver

Research output: Contribution to journalArticle

44 Scopus citations

Abstract

To characterize the transmission cycle of enzootic Venezuelan equine encephalitis virus (VEEV) strains believed to represent an epizootic progenitor, we identified natural vectors in a sylvatic focus in the middle Magdalena Valley of Colombia. Hamster-baited traps were placed into an active forest focus, and mosquitoes collected from each trap in which a hamster became infected were sorted by species and assayed for virus. In 18 cases, a single, initial, high-titered mosquito pool representing the vector species was identified. These vectors included Culex (Melanoconion) vomerifer (11 transmission events), Cx. (Mel.) pedroi (5 transmissions) and Cx. (Mel.) adamesi (2 transmissions). These results extend the number of proven enzootic VEEV vectors to 7, all of which are members of the Spissipes section of the subgenus Melanoconion. Our findings contrast with previous studies, which have indicated that a single species usually serves as the principal enzootic VEEV vector at a given location.

Original languageEnglish (US)
Pages (from-to)49-54
Number of pages6
JournalEmerging infectious diseases
Volume9
Issue number1
DOIs
StatePublished - Jan 1 2003

ASJC Scopus subject areas

  • Epidemiology
  • Microbiology (medical)
  • Infectious Diseases

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