| Autor: |
Mello F; Secretaria Estadual da Saúde, Centro Estadual de Vigilância em Saúde, Laboratório Central de Saúde Pública, Porto Alegre, Rio Grande do Sul, Brazil., Souza GD; Prefeitura de Porto Alegre, Secretaria Municipal de Saúde, Diretoria de Vigilância em Saúde, Porto Alegre, Rio Grande do Sul, Brazil., Bedin C; Secretaria Estadual da Saúde, Centro Estadual de Vigilância em Saúde, Laboratório Central de Saúde Pública, Porto Alegre, Rio Grande do Sul, Brazil., Duarte MB; Secretaria Estadual da Saúde, Centro Estadual de Vigilância em Saúde, Laboratório Central de Saúde Pública, Porto Alegre, Rio Grande do Sul, Brazil., Leon ÍF; Universidade Federal de Pelotas, Programa de Pós-Graduação Stricto Sensu em Microbiologia e Parasitologia, Pelotas, Rio Grande do Sul, Brazil., Villela MM; Universidade Federal de Pelotas, Departamento de Microbiologia e Parasitologia, Laboratório de Parasitologia Humana, Pelotas, Rio Grande do Sul, Brazil. |
| Abstrakt: |
Two triatomine genera (Panstrongylus and Triatoma) have essentially been recorded in Rio Grande do Sul State, Brazil. Panstrongylus megistus should be highlighted since this species is one of the main vectors of Trypanosoma cruzi in Brazil, due to its wide geographical distribution and the high susceptibility to this protozoan. This study aimed to present not only the occurrence and distribution of P. megistus in the Porto Alegre city's metropolitan area (PAMA), Rio Grande do Sul State, Brazil, but also the rates of T. cruzi infection, from 2009 to 2020. The PAMA, which comprises 34 cities and 4.4 million habitants, extends across the transition area in two biomes - Pampa and Mata Atlantica - found in the state. Results showed that P. megistus was recorded in 76.5% of cities (i.e., 26 out of 34), mainly in Porto Alegre city, where the vector was found in 11 out of the 12 years that were monitored. Three hundred and nineteen specimens were captured. Two hundred and sixty-seven specimens (83.7%) were located intradomicile (p < 0.0001), while 52.3% positivity for T. cruzi was found. Thus, P. megistus is important in the PAMA, because it invades and colonizes the households. Moreover, the high rates of T. cruzi infection have drawn attention. |
