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Revista da Sociedade Brasileira de Medicina Tropical

versión On-line ISSN 1678-9849


MAZARIEGO-ARANA, Miguel Angel et al. Seroprevalence of human Trypanosoma cruzi infection in diferent geografic zones of Chiapas, Mexico. Rev. Soc. Bras. Med. Trop. [online]. 2001, vol.34, n.5, pp. 453-458. ISSN 1678-9849.

A serologic survey was carried out in four different geographic zones of Chiapas, Mexico. A total of 1,333 samples were collected from residents of thirteen communities located on the Coast, Central Mountain, Lacandon Forest and a zone called Mesochiapas. One hundred and fifty one seropositive individuals (11.3%) were identified. Human Trypanosoma cruzi infection was influenced by geography. In the Lacandon Forest and Central Mountains there was a higher seroprevalence 32.1 and 13.8% respectively, than on the coast (1.2%). In Mesochiapas there were no seropositive individuals among the 137 persons tested. An active transmission is probably continuing because seropositive cases (13.8%) were detected in children under 10 years of age. The vector recognized on the Coast was Triatoma dimidiata while in the Lacandon Forest it was Rhodnius prolixus.

Palabras clave : Chagas' disease; Trypanosoma cruzi; Seroprevalence; Seroepidemiologic survey.

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