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- Title
Retrospective study of triatomines in an endemic region for Chagas disease in the state of Bahia, Brazil.
- Authors
Sousa Santos, Jéssica Samile; Dias de Pauda, Alini; Cavalcante Braga Novais, Joane Maíra; Torres Magalhães Junior, Jairo; de Oliveira Carneiro, Ianei; dos Santos, Flavia
- Abstract
Chagas disease is caused by Trypanosoma cruzi, which has several forms of transmission. Among them, the vector route requires the constant action of the Health Surveillance in the control of triatomines. Our objective is to describe the diversity of triatomines and the rate of natural infection by T. cruzi in these insects, as well as to analyse entomological indicators, through secondary data generated by the Health Surveillance of the municipality of Barra, in the period from 2009 to 2019. The secondary data were subjected to descriptive analysis and the entomological indicators calculated. Williams' G test and Fisher's exact test were used to analyse the categorical data. A total of 10,913 triatomines of the genera Rhodnius sp., Panstrongylus sp., Eratyrus sp. and Triatoma sp. were captured, represented by 12 species. Triatoma sordida was the most prevalent 98.66% (10,767/10,913), reflected in the overall infestation index 7.61% (2,555/33,544) and triatomine density 0.24 (8,247/33,544). While the overall infection rate was 0.81% (41/5,048) and remained low during all years. There was significant association for T. sordida in relation to "T. cruzi infection index" and "Developmental stage" and "Capture site". It is concluded that the municipality of Barra has a high occurrence of triatomines of various species, with T. sordida being the most prevalent species and responsible for the rates of infestation and infection by T. cruzi. The presence of these insects in households is a risk for the domestic cycle of the parasite, and thus can transmit T. cruzi to various domestic animals, including humans.
- Subjects
BAHIA (Brazil : State); BRAZIL; CONENOSES; DISEASE progression; FISHER exact test; TRIATOMA; CHAGAS' disease; TRYPANOSOMA cruzi
- Publication
Acta Veterinaria Brasilica, 2022, Vol 16, Issue 2, p117
- ISSN
1981-5484
- Publication type
Article
- DOI
10.21708/avb.2022.16.2.10473