Schistosomiasis in Rio Grande do Norte, Brazil: revisiting former transmission foci

Abstract

Schistosomiasis is a neglected tropical disease, and in Brazil it is caused by Schistosoma mansoni, which uses snails of the genus Biomphalaria spp. to maintain its life cycle. Active transmission of schistosomiasis was assessed in three municipalities in Rio Grande do Norte through the detection of naturally infected snails. Three annual surveys were conducted in water bodies, demonstrating the persistence of transmission. There is suspected transmission at bathing sites frequented by local residents and tourists. The lack of sanitation and the constant use of these water bodies by residents highlight the need for continuous epidemiological monitoring in these localities.