Improved dengue fever prevention through innovative intervention methods in the city of Salto, Uruguay.

Autor(es): Basso César; Garcia da Rosa Elsa; Romero Sonnia; González Cristina; Lairihoy Rosario; Roche Ingrid; Caffera Ruben M; da Rosa Ricardo; Calfani Marisel; Alfonso-Sierra Eduardo; Petzold Max; Kroeger Axel; Sommerfeld Johannes

Resumo: Uruguay is located at the southern border of Aedes aegypti distribution on the South American sub-continent. The reported dengue cases in the country are all imported from surrounding countries. One of the cities at higher risk of local dengue transmission is Salto, a border city with heavy traffic from dengue endemic areas. We completed an intervention study using a cluster randomized trial design in 20 randomly selected 'clusters' in Salto. The clusters were located in neighborhoods of differing geography and economic, cultural and social aspects. Entomological surveys were carried out to measure the impact of the intervention on vector densities. Through participatory processes of all stakeholders, an appropriate ecosystem management intervention was defined. Residents collected the abundant small water holding containers and the Ministry of Public Health and the Municipality of Salto were responsible for collecting and eliminating them. Additional vector breeding places were large water tanks; they were either altered so that they could not hold water any more or covered so that oviposition by mosquitoes could not take place. The response from the community and national programme managers was encouraging. The intervention evidenced opportunities for cost savings and reducing dengue vector densities (although not to statistically significant levels). The observed low vector density limits the potential reduction due to the intervention. A larger sample size is needed to obtain a statistically significant difference.

Palavras-Chave: Aedes aegypti; Community participation; Cost analysis; Eco-bio-social research; ntomological indices; Inter-sectorial approaches

Imprenta: Transactions of the Royal Society of Tropical Medicine and Hygiene, v. 109, n. 2, p. 134-142, 2015

Identificador do objeto digital: 10.1093/trstmh/tru183

Descritores: Aedes aegypti - Pathogenesis ; Aedes aegypti - Viral infections ; Aedes aegypti - Transmission ; Aedes aegypti - Dengue ; Aedes aegypti - Epidemiology ; Aedes aegypti - Public health

Data de publicação: 2015