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Memórias do Instituto Oswaldo Cruz
Fundação Oswaldo Cruz, Fiocruz
ISSN: 1678-8060
EISSN: 1678-8060
Vol. 95, No. 3, 2000, pp. 375-380
Bioline Code: oc00061
Full paper language: English
Document type: Research Article
Document available free of charge

Memórias do Instituto Oswaldo Cruz, Vol. 95, No. 3, 2000, pp. 375-380

 en Study of Schistosoma mansoni Isolates from Patients with Failure of Treatment with Oxamniquine
Maria Jos Conceio; Carlos Alberto Argento & Acyr Corra


After three successive treatments with oxamniquine the continuing elimination of Schistosoma mansoni eggs was observed in patients, who came from various regions of Brazil, with different clinical forms of schistosomiasis. The objective of the present study was to determine the experimental behaviour of five different S. mansoni isolates in Swiss Webster mice that were submitted to treatment with the same drug. The experimental group with failure of treatment showed higher mean number of surviving male worms when it was compared to the group without failure of treatment. These date suggest the possibility of resistance to oxamniquine.

Schistosoma mansoni, patients, oxamniquine, failure of treatment

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