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



Kenya 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 Kenya, especially in the irrigated agricultural zones and densely populated urban and suburban areas around Lake Victoria, adjacent islands, and on the Kano Plain (districts of Bondo, Kisumu East, Kisumu West, Nyando, Rachuonyo, Homa Bay, and Suba in Nyanza Province).

Risk is also present on the plains to the north, east, and northeast of Nairobi, especially in the districts of Kitui and Machakos; the lower valley of the Tana River in the southeastern part of the country extending from the towns of Garissa to Hola; the Indian Ocean coastal areas from Lamu to the border with Tanzania, including the area of Mombasa; Lake Jipe and surrounding areas, including Taveta, Wundanyi, and Voi. Localized risk exists in Wajir and Wajir Bor in North Eastern Province and in Kimilili in Western Province. Additional snail intermediate hosts: Bulinus ugandae, Bulinus tropicus and Bulinus nasutus for S. haematobium; Biomphalaria choanomphala for S. mansoni.

Risk of Schistosomiasis caused by: Schistosoma haematobium, Schistosoma mansoni

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


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