Schistosomiasis risk is present in the country, areas of risk are described below:
Public health control programs are ongoing and incidence rates have been reduced. S. mansoni is present in rural and suburban areas of the following states, especially around irrigation systems. The full extent of Schistosomiasis risk in Brazil is unknown, especially in the Amazon Basin.
North Region: Rondônia, Pará.
Northeastern Region: Maranhão, Piauí, Ceara, Rio Grande do Norte, Paraíba, Pernambuco, Alagoas, Sergipe, Bahia.
Central-West Region: Federal District (Brasilia), Goiás.
Southeastern Region: Minas Gerais, Espírito Santo, Rio de Janeiro.
South Region: S?o Paulo, Paraná (including localized risk at Iguazú Falls), Santa Catarina, Rio Grande do Sul.
Risk of Schistosomiasis caused by: Schistosoma mansoni
The main intermediate host snail is: Biomphalaria glabrata, Biomphalaria straminea, Biomphalaria tenagophila