Susceptibility of Ae. aegypti (Diptera: Culicidae) to infection with epidemic (subtype IC) and enzootic (subtypes ID, IIIC, HID) Venezuelan equine encephalitis complex alphaviruses

Diana I. Ortiz, Wenli Kang, Scott Weaver

Research output: Contribution to journalArticle

16 Scopus citations

Abstract

To test the hypothesis that enzootic and epidemic Venezuelan equine encephalitis (VEE) complex alphaviruses can infect and be transmitted by Ae. aegypti, we conducted a series of experimental infection studies. One set of experiments tested the susceptibility of geographic strains of Ae. aegypti from Peru and Texas (USA) for epidemic (subtype IC) and enzootic (subtype ID) strains from Colombia/Venezuela, whereas the second set of experiments tested the susceptibility of Ae. aegypti from Iquitos, Peru, to enzootic VEE complex strains (subtypes ID, IIIC, and IIID) isolated in the same region, at different infectious doses. Experimental infections using artificial bloodmeals suggested that Ae. aegypti mosquitoes, particularly the strain from Iquitos, Peru, is moderately to highly susceptible to all of these VEE complex alphaviruses. The occurrence of enzootic VEE complex viruses circulating endemically in Iquitos suggests the possibility of a dengue-like transmission cycle among humans in tropical cities.

Original languageEnglish (US)
Pages (from-to)1117-1125
Number of pages9
JournalJournal of Medical Entomology
Volume45
Issue number6
DOIs
StatePublished - Nov 2008

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Keywords

  • Adaptation
  • Alphavirus
  • Mosquito
  • Susceptibility
  • Vector
  • Venezuelan equine encephalitis

ASJC Scopus subject areas

  • Insect Science
  • veterinary(all)
  • Infectious Diseases
  • Parasitology

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