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[susceptibility of biomphalaria tenagophila from the paraná and uruguay river basins to schistosoma mansoni].to study the possibility that schistosomiasis might be able to spread into the basins of the paraná and uruguay rivers, 1,711 snails were experimentally exposed to infection with schistosoma mansoni. these snails were laboratory-bred progeny of biomphalaria tenagophila collected from 15 populations in the geographic area under consideration. three strains of s. mansoni were used: bh2, adapted to b. glabrata, and sj and sj2 adapted to b. tenagophila. none of the 543 snails exposed to the bh2 stra ...19979162585
a potential vector of schistosoma mansoni in uruguay.susceptibility experiments were carried out with a biomphalaria straminea-like planorbid snail (biomphalaria aff. straminea, species inquirenda) from espinillar, near salto (uruguay), in the area of the salto grande reservoir, exposed individually to 5 miracidia of schistosoma mansoni (sj2 and bh2 strains). of 130 snails exposed to the sj2 strain, originally infective to biomphalaria tenagophila, 30 became infected (23%). the prepatent (precercarial) period ranged from 35 to 65 days. the cercari ...19892520826
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