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This article provides information on the spatial distribution of schistosomiasis, correlating snail foci with human cases using spatial analysis. The locations studied were Merepe III, Pantanal, Salinas, and Socó, comprising 70% of the populated area of Porto de Galinhas. Malacological and parasitological surveys by a CPqAM/ FIOCRUZ team at the location where an epidemic occurred in 2000 identified 15 foci of infected B. glabrata. Human cases were also diagnosed and recorded according to residential block. Spatial analysis was performed using the TerraView computer program and Kernel intensity estimation. Total infection rates, considering all collection stations marked out per location, varied from 15% to 32.4%. The 15 infected B. glabrata foci included 9 in Merepe, 2 in Socó, 3 in Salinas, and 1 in Pantanal. The results suggest a strong spatial trend in the risk of schistosomiais transmission in Salinas and Socó. In Merepe, with the most foci and where foci were closer together, individual focal infection rates were lower. Spatial analysis thus showed less concentration of risk as compared to other locations studied. As for human cases, two high-intensity areas were observed, shown on the map in darker colors.

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Análise espacial dos focos de Biomphalaria glabrata e de casos humanos de esquistossomose mansônica em Porto de Galinhas, Pernambuco, Brasil, no ano 2000