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Memórias do Instituto Oswaldo Cruz
Fundação Oswaldo Cruz, Fiocruz
ISSN: 1678-8060
EISSN: 1678-8060
Vol. 94, No. 1, 1999, pp. 9-10
Bioline Code: oc99004
Full paper language: English
Document type: Research Article
Document available free of charge

Memórias do Instituto Oswaldo Cruz, Vol. 94, No. 1, 1999, pp. 9-10

 en RESEARCH NOTE - Identification of a Transmission Focus of Schistosoma mansoni in the Southernmost Brazilian State, Rio Grande do Sul
Carlos Graeff-Teixeira; Celso B dos Anjos; Valderes C de Oliveira; Carlos FP Velloso; Maria Bernardete S da Fonseca; Cristiana Valar; Caroline Moraes; Cinara T Garrido & Ronaldo S do Amaral

Abstract

The southern known limit of occurrence of Schistosoma mansoni Sambon 1907 in
Brazil was the northeast of the State of Santa Catarina. In Rio Grande do Sul (RS) , Brazil's
southernmost state, Biomphalaria tenagophila, B. straminea and B.
peregrina were known to occur, but both mollusc and human infection was never
documented as autochthonous. The infected child found in São Valentim, RS, came
with his family from the endemic area in Minas Gerais and was not considered as an
autochthonous infection by the Sucam. B. glabrata was reported for the first time in
RS after the finding of S. mansoni eggs in a patient (OJSP) living in Esteio (20 km
from Porto Alegre), that was initially considered as an imported infection. An extended
epidemiological investigation gave support to the idea of an autochthonous infection, even
though the source of infection could not be identified.

Keywords
schistosomiasis - Schistosoma mansoni - Rio Grande do Sul - Brazil

 
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