Incidência de infecção por trypanosoma cruzi em triatomíneos capturados na região do Médio-Araguaia

Abstract

Carlos Chagas, a Brazilian physician and scientist, was the first to describe the American trypanosomiasis, also known as Chagas disease (DC), in the year 1909. The DC is caused by the protozoan Trypanosoma cruzi (T. cruzi). triatomines. Although Brazil has controlled transmission by the main vector species, Triatoma infestans, there is still transmission associated with many other autochthonous species, especially in areas close to the natural environments of triatomines. Triatomines are found frequently in the municipality of Barra do Garças-MT. Thus, the objective of this study was to analyze the incidence of T. cruzi infection in triatomines of the Middle-Araguaia region through the abdominal compression technique before and after feeding with detection of the protozoan under an optical microscope. The triatomines were captured through spontaneous catches by the municipal and military population of the Aeronautical Detachment located in the Serra Azul State Park. A total of 98 triatomines were captured, most of them belonging to the genus Triatoma and the species Triatoma williami. It was possible to analyze only 18.36% of the collected insects, and of these 1.02% presented trypanosomatídeos forms in the feces.