PMID: 18719725Aug 23, 2008Paper

Mosquitos (Diptera: Culicidae) in the small village where a human case of Venezuelan equine encephalitis was recorded

Biomédica : revista del Instituto Nacional de Salud
C FerroScott C Weaver

Abstract

The enzootic focus of subtype ID of Venezuelan equine encephalitis (VEE) virus in the Central Magdalena region (central Colombia) occasionally produces human cases. The report of a VEE infection in a three-year-old girl in the small Chingalé, municipalitype of Puerto Wilches, Santander, motivated this study. The village of Chingalé was evaluated as the probable site of infection. In June 2005, mosquitoes were collected with CDC light traps in and outside of dwellings in the village. Trinidad traps were placed in nearby vegetation, and hamsters were used as sentinel animals near homes. One hundred and seven samples, consisting of 14,423 mosquitoes of 35 species were collected. The relative abundance of incriminated vectors of subtype ID of VEE, Culex (Melanoconion) pedroi and Cx. (Mel.) ocossa, was generally low (<4%), but both species were more frequent outside of dwellings than indoors. Cx. (Mel.) ocossa was collected in CDC traps and was more frequent indoors,whereas Cx. (Mel.) pedroi was found in the Trinidad traps. In addition, Psorophora confinnis was present, recognized as a potential vector of the epidemo/epizootic subtype. Mansonia indubitans, another recognized vector, was present at high frequency within dwellings. Th...Continue Reading

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