RESUMO
La vigilancia virológica de vectores en el departamento de Piura se realiza considerando su variada topografía, amplia gama de climas en distancias cortas (desde desiertos hasta bosques tropicales) y la precipitación pluvial elevada durante la presentación de El Niño, favorecen el aumento de vectores de arbovirosis epizoodémicas, como la Encefalitis Equina Venezolana y los endémicos contra el Dengue. En el 2008 se realizó un muestro entomológico en tres distritos de la Pronvicia de Ayabaca (Paimas, Montero y Suyo). Este muestreo se viene desarrollando desde el año 1981, con la finalidad de determinar el desplazamiento de vectores de arbovirus occidentales. Durante la época del muestreo (estación lluviosa) se capturaron un total de 1916 ejemplares principalmente anofelinos. Las mayores capturas correspondieron a An. Albimanus y a Oc. Scapularis. No se recuperó ningún Arbovirus de los 50 pools de mosquitos inoculados en cultivos celulares C6/36 y Vero. Parece que las condiciones climáticas normales para la estación no constituyeron un riesgo para la presentación de vectores epizoóticos del VEE o del Bunyavirus asociados a epizootias durante los años 1972-73 y de 1983-84, respectivamente. No se encontró Ae. Aegypti, vector del dengue de amplia distribución en el departamento, probablemente porque las áreas de muestreo son rurales. Por otro lado, se observó la incursión del vector selvático de la fiebre amarilla Haemagogus soperi en la localidad de Sarayuyo, distrito de Suyo que hace necesario mantener la vigilancia entomológica.
Viral surveillance of vector-borne human diseases in the department of Piura is performed considering its varied topography, with a wide range of climates over short distances (from deserts to tropical forests) and the increase of rainfall mainly during the presentation of ENSO. This variability enables to study both the epizoodemic arbovirosis as Venezuelan Equine Encephalitis and those endemic as Dengue. In 2008, entomological sampling was performed looking arbovirus in three districts of the Province of Ayabaca (Paimas, Montero and Suyo). This sampling has been developing since 1981 in order to determine the displacement of arbovirus vectors in eastern tropical areas and western desert forests. During the sampling period (rainy season) were captured a total of 1916 specimens mainly anophelines. The largest catches were of An albimanus and Oc. Scapularis. Any arboviruses were not recovered from the 50 polls of mosquitos inoculated in C6/36 and Vero cell cultures. It seems that weather conditions were normal and did nor constituted a risk in order to increase epizootic vectors of VEE or Bunyavirus associated with epizootics in the years 1972-73 and 1983-84, respectively. Ae. Aegypti vector of Dengue widely distributed in the department, was not found probably because the sampled areas are rural. Furthermore, we observed the incursion of wild vector of yellow Fever. Haemogogus soperi, in the town of Sarayuyo, Suyo district, for this reason it is necessary to maintain entomological surveillance.