Aedes aegypti pupal-index spatial analysis: A configuration of the arbovirosis transmission risk

Abstract

This study seeks to establish the applicability of the spatial analysis of the Aedes aegypti pupal index (PI) as a tool to evaluate the transmission risk of arbovirus in a specific locality. The PI and traditional infestation indexes of Aedes aegypti larvae were obtained for 366 households during the rainy season in 2018 in the La Gran Vía. With the data obtained, a geographic information system (GIS) was created, and the spatial interpolation of the variables included in the study was made. Some 1,211 inhabitants were counted, and 617 containers were inspected. According to the container classification, concrete tanks were the most frequent (51%) and the most productive - accounting for 93% of pupae. The estimated pupal index in the locality was 0.4. The spatial heterogeneity of the arbovirus transmission risk and its components is described. The implementation of the cartographic representation of the pupal index, in addition to an analysis of arbovirus transmission risk, according to the human vulnerability and the vectorial menace, provides important information for control and prevention strategies, and enables an enhanced management of resources by local authorities.