3 research outputs found
Susceptibility of Triatoma infestans to deltamethrin in Rio Grande do Sul, Brazil
Strategies for controlling Chagas disease are based on spraying
infested houses with pyrethroid insecticides. However, the intense use
of these insecticides has promoted resistance of Triatoma infestans
and, in Argentina, Bolivia and Southern Brazil, low levels of
resistance have been reported. Due to the persistence of T. infestans
in the state of Rio Grande do Sul (RS), we evaluated the occurrence of
deltamethrin resistance in four strains from different municipalities
in comparison to two susceptible strains from Brazil and one resistant
strain from Bolivia. The results indicated the absence of resistance in
T. infestans from RS