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Latin American Poster Session

Disease/Vector Studies

Session: Latin American Poster Session

P 31 - Spatial stratification of entomological risk for dengue transmission in neighborhoods of Asuncion, Paraguay

Wednesday, March 6, 2024
12:15pm – 1:15pm  
Location: The Grand Hall
Abstract: Dengue is one of the most important vectors borne disease and a serious public health issue in tropical and subtropical regions, and Paraguay is no stranger to this problem. This country experiences periodic dengue epidemics, and Asunción (its capital) is one of the most affected cities. For instance, in 2020 more than 220,000 cases were reported, a country with 7.5 million inhabitants. The disease is caused by Dengue virus and is transmitted to humans by bites of Aedes mosquitoes, mainly Ae. aegypti. This mosquito oviposits in containers inside homes, and this makes it possible to design entomological indicators to calculate the risk of transmission. The availability of entomological information related to the spatial distribution of dengue risk help us build heat maps, which is a very useful information for the authorities and the stakeholders to design prevention and control strategies. In order to stratify the entomological risk for dengue transmission in the neighborhoods of Asunción, a retrospective observational and analytical study was done. In this study we use the survey of Rapid Aedes Index (LIRA: Levantamiento de Índices Rápidos para Aedes by its acronym in Spanish), from 2014 to 2018, to stratify high- and low-risk neighborhoods, according to p75 and p25 percentiles, respectively. It was observed that 14 high entomological risk neighborhoods, 17 low risk neighborhoods, 33 medium risk neighborhoods and 3 neighborhoods with scores for both groups were identified. According to results, the spatial analysis of LIRA allows stratification of the risk of dengue transmission in Asunción, which provides valuable information for targeting surveillance and control of dengue disease.