Mapeamento de locais de ocorrência de transmissão da bilharziose nos distritos da Manhiça e Marracuene na Província de Maputo

Abstract

The present work aimed at mapping the sites of occurrence of bilharzia transmission in Manhiça and Marracuene districts in Maputo province. The work was carried out during the months of July to August (dry and cold season) and October to November 2006 (rainy and hot season). For the capture of the molluscs, the method of capture by netting was applied. All molluscs of the genus Bulinus sp were identified and separated according to size, and exposed to sunlight for 3 to 4 hours in order to release cercariae. The results revealed that in the study areas there were three sites for each district involved in the transmission of bilharziosis. Apart from the genus Bulinus other intermediate vectors but not of the urinary form were also identified which are Biomphalaria sp and Lymnaea sp, In Marracuene district, the density was high in the month of August (dry and cold season), contrary to what was observed in Manhiça district where the density was high in the months of October to November (rainy and hot season). The infection rate was higher in Marracuene district, ranging from 0 to 4.16%. Manhiça district showed lower infection rates, ranging from 0 to 2.7%. In general, the infection rate was higher during the months of October to November (rainy and hot season). (TRADUÇAO NOSSA)