Unsusceptibility of Biomphalaria occidentalis to infection with a strain of Schistosoma mansoni
Susceptibility experiments with 1582 specimens of Biomphalaria occidentalis, 3-6 mm in shell diameter, from 10 localities of the states of Mato Groso, Mato Grosso do Sul, Paraná and São Paulo, exposed individually to 5 miracidia of Schistosoma mansoni (SJ2 strain), gave negative results. B. tenagophila from Joinville (Santa Catarina) and Taubaté (São Paulo), used as controls, showed infection rates of 17.9% and 14.8%, respectively. Experiments with other strains of S. mansoni are in progress. If the present results are confirmed, expansion of schistosomiasis toward far-western Brazil through the agency of B. occidentalis becomes less probable.
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| Main Authors: | , |
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| Format: | Digital revista |
| Language: | English |
| Published: |
Instituto Oswaldo Cruz, Ministério da Saúde
1982
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| Online Access: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0074-02761982000100006 |
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