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Entomological investigation of triatomine fauna in rural communities in the state of Piauí, Brazilian semi-arid region

2024; Revista Eletronica Acervo Saude; Volume: 24; Issue: 5 Linguagem: Inglês

10.25248/reas.e17105.2024

2178-2091

Darwin Renne Florêncio Cardoso, Simone Patrícia Carneiro Freitas, Ranieri Flávio Viana de Sousa, Beatriz Fátima Alves de Oliveira, Filipe Anibal Carvalho Costa, Jéssica Milena Moura Neves, Brenda Bulsara Costa Evangelista, Jéssica Pereira dos Santos, Amália Ramos de Sousa, Jacenir Reis dos Santos Mallet,

Trypanosoma species research and implications

Objective: To describe the characteristics and distribution of triatomine fauna in rural communities of Simplício Mendes municipality, located in the state of Piauí, Brazilian semiarid region. Methods: This is a cross-sectional study and entomological survey conducted from 2022 to 2023. Insects were captured using active search method in all human dwellings, which were georeferenced, followed by characterized of species, sex, developmental stage, and identification of presence of infection by trypanosomatids. Results: All households (n=178) in 10 rural localities of the municipality were investigated, resulting in a household triatomine infestation rate of 14%. A total of 268 insects were collected, predominantly species from the Triatoma brasiliensis complex (n=190), immature developmental stage (n=172), and originating from peridomestic environments (n=250). The rate of triatomines with natural infection by Trypanosoma cruzi was 1.1%. Conclusion: The finding of infestation by species from the T. brasiliensis complex with higher concentration cohabiting extradomestic spaces, wide dispersion, and presence of natural infection by T. cruzi signals conditions for the maintenance of vector-borne transmission of Chagas disease in the municipality.