Please use this identifier to cite or link to this item: https://www.arca.fiocruz.br/handle/icict/12048
Title: Chagas disease and housing improvement in northeastern Brazil: a cross-sectional survey
Authors: Lima, Marli M.
Costa, Filipe A. Carvalho
Toma, Helena K.
Pereira, José Borges
Oliveira, Tiago Guedes de
Sarquis, Otília
Affilliation: Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Ecoepidemiologia da Doença de Chagas. Rio de Janeiro, RJ, Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Epidemiologia e Sistemática Molecular. Rio de Janeiro, RJ, Brasil / Escritório Técnico Regional Fiocruz Piauí. Terezina, PI, Brasil.
Universidade Federal do Rio de Janeiro. Laboratório de Diagnóstico Molecular e Hematologia. Rio de Janeiro, RJ, Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Doenças Parasitárias. Rio de Janeiro, RJ, Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Ecoepidemiologia da Doença de Chagas. Rio de Janeiro, RJ, Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Ecoepidemiologia da Doença de Chagas. Rio de Janeiro, RJ, Brasil.
Abstract: Chagas disease was investigated in two new settlements of landless rural workers inhabiting prefabricated, triatomine-proof houses and in four neighboring older communities where mud huts were still well suitable for vectors. Through a cross-sectional survey and entomological assessment, we surveyed 148 houses/families in the two new settlements and in 47 houses/families in the four older localities.We determined seroprevalence of Chagas disease through IFI and Elisa (eluates) assays and searched for vectors in the domestic and peridomestic environments. Seroprevalence reached 0.6 % (3/466) in the new settlements and 0.8 % (1/115) in the older communities. Triatomines were not found in the new settlements, while 7 Triatoma brasiliensis, 4 T. pseudomaculata, 1 Panstrongylus lutzi, and 145 Rhodnius nasutus were collected in the older localities. In addition, a colony of T. brasiliensis (n=55) was encountered inside a school attended by children of the region. Parasite strains isolated from the insects were characterized as T. cruzi I. Despite the low prevalence of Chagas disease in both scenarios, entomological surveillance must be strengthened and housing improvement reinforced in order to control vector transmission. The risk of infection by the vectors was lower in the settlements of improved homes, where conditions for colonization of the peridomestic environment by transmitting insects were not observed.
Keywords: Chagas Disease
Trypanosoma cruzi
Triatomines
Northeastern Brazil
Housing improvement
keywords: Doença de Chagas
Trypanosoma cruzi
Triatominae
Issue Date: 2015
Publisher: Springer-Verlag Berlin Heidelberg
Citation: LIMA, Marli M. et al. Chagas disease and housing improvement in northeastern Brazil: a cross-sectional survey. Parasitol Res., v.114, n.5, p.1687–1692, 2015.
DOI: 10.1007/s00436-015-4350-1
ISSN: 1432-1955
Copyright: restricted access
Appears in Collections:IOC - Artigos de Periódicos

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