IAMAT |International Association of Medical Assistance to Travellers| IAMAT |International Association of Medical Assistance to Travellers|



Tanzania General Health Risks: Schistosomiasis

Infection is transmitted by snails living in fresh water such as lakes, rivers, streams and ponds in Africa, and some countries in Southeast Asia, South America, and the Caribbean.

Schistosomiasis - Overview Be Aware of Schistosomiasis World Schistosomiasis Risk Chart


Schistosomiasis risk is present in the country, areas of risk are described:

S. haematobium and S. mansoni are endemic in Tanzania. High incidence rates are reported on the shores and islands of Lake Victoria, and further inland in the region of Shinyanga and in the eastern part of the country specifically in Tanga and Dar Es Salaam regions. Cases are also reported from Lake Malawi and Lake Tanganyika. In Zanzibar (Unguja and Pemba islands) Schistosomiasis is also endemic, but control and elimination programs have recently been implemented. Additional snail intermediate hosts: Bulinus nasutus for S. haematobium and Biomphalaria choanomphala for S. mansoni.

Risk of Schistosomiasis caused by: Schistosoma haematobium, Schistosoma mansoni

The main intermediate host snail is: Bulinus truncatus, Bulinus globosus, Bulinus africanus, Biomphalaria pfeifferi, Biomphalaria sudanica, see text above for additional intermediate snail host.


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