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  • Title: Schistosomiasis mansoni in urban Northeast Brazil: influence of rainfall regime on the population dynamics of Biomphalaria sp.
    Author: Oliveira DS, Santos VB, Melo AG, Lima ÁS, Carvalho CD, Allegretti SM, Melo CM, Madi RR, Jeraldo Vde L.
    Journal: Rev Soc Bras Med Trop; 2013; 46(5):654-7. PubMed ID: 24270258.
    Abstract:
    INTRODUCTION: Our objective was to evaluate the influence of rainfall regime on the population dynamics of Biomphalaria in a potential urban focus of schistosomiasis in Aracaju, Brazil, during 2009-2010. METHODS: Snails were collected monthly and were counted, measured and identified; the level of infection and fecal contamination at the sampling sites was determined; rainfall data were obtained. RESULTS: High levels of fecal contamination were observed, and the abundance of Biomphalaria glabrata increased during the rainy and post-rainy seasons. The snails' size was variable, and infected snails were identified independently of rainfall. CONCLUSIONS: These results provide evidence of anthropogenic and climate interference in an urban focus of schistosomiasis in the Aracaju metropolitan area.
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