| Author | Ribeiro Junior, Gilmar José da Silva | |
| Author | Gonçalves, Rodrigo Gurgel | |
| Author | Reis, Renato Barbosa | |
| Author | Santos, Carlos Gustavo Silva dos | |
| Author | Amorim, Alekhine | |
| Author | Andrade, Sonia Gumes | |
| Author | Reis, Mitermayer Galvão dos | |
| Access date | 2015-05-28T18:35:10Z | |
| Available date | 2015-05-28T18:35:10Z | |
| Document date | 2015 | |
| Citation | RIBEIRO JUNIOR, G. et al. Frequent house invasion of Trypanosoma cruzi-infected triatomines in a suburban area of Brazil. PLOS Neglected Tropical Diseases, v. 9, n. 4, p. e0003678, 2015. | pt_BR |
| ISSN | 1935-2727 | |
| URI | https://www.arca.fiocruz.br/handle/icict/10581 | |
| Language | eng | pt_BR |
| Publisher | Public Library of Science | pt_BR |
| Rights | open access | pt_BR |
| Subject in Portuguese | Trypanosoma cruzi | pt_BR |
| Subject in Portuguese | Doença de chagas | pt_BR |
| Subject in Portuguese | Doenças infecciosas | pt_BR |
| Subject in Portuguese | Triatoma | pt_BR |
| Subject in Portuguese | Triatomíneos | pt_BR |
| Subject in Portuguese | Infecção | pt_BR |
| Subject in Portuguese | Transmissão | pt_BR |
| Subject in Portuguese | População suburbana | pt_BR |
| Subject in Portuguese | Vigilância | pt_BR |
| Subject in Portuguese | Brasil | pt_BR |
| Title | Frequent House Invasion of Trypanosoma cruzi-Infected Triatomines in a Suburban Area of Brazil | pt_BR |
| Type | Article | pt_BR |
| DOI | 10.1371/journal.pntd.0003678 | |
| Abstract | Background
The demographic transition of populations from rural areas to large urban centers often results
in a disordered occupation of forest remnants and increased economic pressure to develop
high-income buildings in these areas. Ecological and socioeconomic factors
associated with these urban transitions create conditions for the potential transmission of infectious
diseases, which was demonstrated for Chagas disease.
Methodology/Principal Findings
We analyzed 930 triatomines, mainly Triatoma tibiamaculata, collected in artificial and sylvatic
environments (forests near houses) of a suburban area of the city of Salvador, Bahia
State, Brazil between 2007 and 2011. Most triatomines were captured at peridomiciles.
Adult bugs predominated in all studied environments, and nymphs were scarce inside houses.
Molecular analyses of a randomly selected sub-sample (n=212) of triatomines showed
Trypanosoma cruzi infection rates of 65%, 50% and 56% in intradomestic, peridomestic and
sylvatic environments, respectively. We detected the T. cruzi lineages I and II and mixed infections.
We also showed that T. tibiamaculata fed on blood from birds (50%), marsupials
(38%), ruminants (7%) and rodents (5%). The probability of T. cruzi infection was higher in
triatomines that fed on marsupial blood (odds ratio (OR) = 1.95, 95% confidence interval
(CI) = 1.22-3.11). Moreover, we observed a protective effect against infection in bugs that
fed on bird blood (OR = 0.43, 95% CI = 0.30-0.73).Conclusions/Significance
The frequent invasion of houses by infected triatomines indicates a potential risk of T. cruzi
transmission to inhabitants in this area. Our results reinforce that continuous epidemiological
surveillance should be performed in areas where domestic transmission is controlled
but enzootic transmission persists. | pt_BR |
| Affilliation | Fundação Oswaldo Cruz. Centro de Pesquisas Gonçalo Moniz. Laboratório de Patologia e Biologia Molecular. Salvador, BA, Brasil / Faculdade Ruy Barbosa DeVry. Salvador, BA, Brasil | pt_BR |
| Affilliation | Universidade de Brasília. Laboratório de Parasitologia Médica e Biologia de Vetores. Brasília, DF, Brasil | pt_BR |
| Affilliation | Fundação Oswaldo Cruz. Centro de Pesquisas Gonçalo Moniz. Laboratório de Patologia e Biologia Molecular. Salvador, BA, Brasil / Unifacs. Universidade Salvador. Salvador, BA, Brasil | pt_BR |
| Affilliation | Fundação Oswaldo Cruz. Centro de Pesquisas Gonçalo Moniz. Laboratório de Patologia e Biologia Molecular. Salvador, BA, Brasil / Secretaria da Saúde. Laboratório Central de Saúde Pública do Estado da Bahia. Laboratório de Entomologia. Salvador, BA, Brasil | pt_BR |
| Affilliation | Fundação Oswaldo Cruz. Centro de Pesquisas Gonçalo Moniz. Laboratório de Patologia e Biologia Molecular. Salvador, BA, Brasil | pt_BR |
| xmlui.metadata.dc.subject.ods | 03 Saúde e Bem-Estar | |
