Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2021 Apr 12:54:e0740.
doi: 10.1590/0037-8682-0740-2020. eCollection 2021.

Trypanosoma cruzi vectors and reservoirs in Southern Sergipe

Diana Matos Euzébio  1   2 , Fábia Regina Dos Santos  1   2 , Daniel Matos Euzébio de Queiroz da Cruz  3 , Ana Elisabeth Leal Varjão  3 , Isabela Soares Costa  3 , Guilherme Lopes Vasconcelos Manhães  3 , Eduardo Melo Nascimento  4 , Dalmo Correia  5 , Angela Maria da Silva  1   3
Affiliations

Trypanosoma cruzi vectors and reservoirs in Southern Sergipe

Diana Matos Euzébio et al. Rev Soc Bras Med Trop. .

Abstract

Introduction: Chagas disease is a health problem that affects approximately 7 million people worldwide, according to the World Health Organization. Vector transmission is one of the most important routes in South and Central American countries. Between 2013 and 2019, municipalities of Sergipe sent 507 triatomines for analysis, unveiling the largest records found in the south in the villages of Poço da Clara, Alagoinhas and Pilões, and the municipality of Tobias Barreto. The high prevalence of infected vectors in these localities motivated this epidemiological study.

Methods: After educational lectures on the vectors and risks of the disease, a structured questionnaire was administered to identify areas and risk factors for transmission of the parasite. The data guided the collection of vectors and blood samples from domestic reservoirs.

Results: The studied region is considered endemic for triatomines infected by Trypanosoma cruzi with three species of vectors; the highest prevalence was Panstrongylus lutzi (54.83%), followed by Triatoma pseudomaculata (43.54%), and Triatoma tibiamaculata (1.61%). In the villages in this study, 100% of the vectors were found intradomically. The coexistence of residents with domestic animals was reported by 62.04% (255) of those surveyed. Forty-one small animals that were actively living with humans at home in the localities were evaluated serologically. No infection was observed in the domestic animals.

Conclusions: There are favorable conditions for the domiciliation of triatomines in the evaluated locations, contributing to the risk of vectorial transmission of Chagas disease.

PubMed Disclaimer

Conflict of interest statement

Conflict of Interest: The authors declare that there is no conflict of interest.

Figures

FIGURE 1:
FIGURE 1:. Packaging containing one male specimen of the triatomine P. lutzi captured by a villager in Poço da Clara - Sergipe, October 2019. Source: Euzébio, DM, 2019.
FIGURE 2:
FIGURE 2:. Entomological indexes of infected triatomines analyzed in the municipalities of Sergipe, Brazil, from 2013 to 2019. Source: Central Public Health Laboratory of Sergipe, Entomology Service, Sergipe (2019).
FIGURE 3:
FIGURE 3:. Assessment of Triatominae food sources in the villages of Alagoinhas, Pilões, and Poço da Clara in 2019. Source: Euzébio, DM, 2019.
See this image and copyright information in PMC

References

    1. World Health Organization (WHO) Sustaining The Drive To Overcome The Global Impact Of Neglected Tropical Diseases: Second WHO Report On Neglected Diseases. Geneva: WHO; 2013. 140 p
    1. Coura JR, Dias JCP. Epidemiology, control and surveillance of Chagas disease: 100 years after its discovery. Mem Inst Oswaldo Cruz. 2009;104(suppl 1):31–40. - PubMed
    1. Ministério da Saúde (MS) Informações de Saúde (TABNET) - Epidemiológicas e Morbidade. Brasil: Departamento de Informática do Sistema Único de Saúde (DATASUS); Aug 29, 2019. [2019]. Available from: http://www2.datasus.gov.br/DATASUS/index.php?area=0203.
    1. Secretaria de Estado da Saúde (SERGIPE). Fundação Parreiras Horta. Laboratório Central de Saúde Pública de Sergipe . Relatório Anual das Atividades de Doenças de Chagas. 2019.
    1. Sarquis O, Sposina R, Oliveira TG de, Mac Cord JR, Cabello PH, Borges-Pereira J, et al. Aspects of peridomiciliary ecotopes in rural areas of Northeastern Brazil associated to triatomine (Hemiptera, Reduviidae) infestation, vectors of Chagas disease. Mem Inst Oswaldo Cruz. 2006;101(2):143–147. - PubMed