Análise de moluscos Biomphalaria sp. para existência de positividade de Schistosoma mansoni no município de Nossa Senhora do Socorro, Sergipe, Brasil

Abstract

Schistosomiasis is an infectious disease caused by the etiologic agent of the class trematoda and genus Schistosoma, having as intermediary host the aquatic mollusk of the genus Biomphalaria and the man as definitive host. It is endemic in 78 countries located in the Americas, Asia and Africa; in Brazil, has its prevalence in the Southeast and Northeast, and in Sergipe reaches 51 of the 75 existing municipalities. The objective of this study was to analyze the existence of positivity for S. mansoni in Planorbideos molluscs found in the municipality of Nossa Senhora do Socorro - Sergipe. The collection of snails was performed in November 2017 by a team of four people, and at each point the Global Positioning System (GPS) was used to obtain the geographical coordinates. Then the molluscs were sent to (LEPaT) to be measured and examined. There were 602 molluscs, 504 of the genus Biomphalaria; 56 of the genus Physa; 24 of the genus Drepanotrema; 1 of the genus Melanoides and 17 of the genus Pomacea. In relation to positivity, all snails Biomphalaria were negative for S. mansoni. Only B. Straminea released cercariae of the equinostoma type. Although the results for S. mansoni were negative, the neighborhoods presented favorable conditions for the transmission of this parasitosis.