Schistosomiasis risk is present in most of the country, except areas described:
S. haematobium is highly endemic in the northern, western, and southern areas of Madagascar. S. mansoni is endemic throughout the country except in the northern province of Antananarivo.
Madagascar experiences high rates of internal migration which facilitates the spread of Schistosomiasis. Travellers should consider the entire island at risk. Additional snail intermediate host for S. haematobium: Bulinus obtusispira.
Risk of Schistosomiasis caused by: Schistosoma haematobium, Schistosoma mansoni
The main intermediate host snail is: Biomphalaria pfeifferi, see text above for additional intermediate snail host.