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  • Title: Biomphalaria spp. (Preston,1910) snails in the municipality of Juiz de Fora, Zona da Mata Mineira mesoregion, state of Minas Gerais, Brazil.
    Author: Tibiriçá SH, Bessa EC, Mittherofhe A, Castro MF, Carvalho Odos S, Caldeira RL, Passos LK, Mattos AM, Pinheiro LS, Sacramento e Silva D, Bastos FO, Andreoli GQ, Bonato GR, Coimbra ES.
    Journal: Mem Inst Oswaldo Cruz; 2006 Sep; 101 Suppl 1():179-84. PubMed ID: 17308767.
    Abstract:
    This study focuses on the geographic distribution of the snail of the genus Biomphalaria and evaluates its infectivity by Schistosoma mansoni in 5264 specimens collected in the municipality of Juiz de Fora, Minas Gerais, Brazil. Of the 31 locations studied, 6 were reservoirs, 11 rudimentary holding ponds, 7 irrigation ditches, 5 lakes, 1 ornamental pond, and 1 waterfall. Intermediate hosts were found only in the rudimentary ponds and ditches, which were 100% positive. Using morphological and molecular analysis techniques, B. tenagophila, B. peregrina, and B. straminea were identified. This is the first report of B. stramínea in the municipality, and evaluation of its infective potential revealed susceptibility of 25.4%. Although we did not find specimens of Biomphalaria infected by S. mansoni, the data obtained indicate the presence of intermediate hosts, especially in the irrigation ditches in Juiz de Fora, and their proximity to contaminated areas.
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