From Openwaterpedia

noun - Schistosomiasis, also known as bilharzia, is an infection caused by a parasitic worm that lives in freshwater in subtropical and tropical regions including Lake Malawi.

The parasite is most commonly found throughout Africa, but also lives in parts of South America, the Caribbean Sea, the Middle East and Asia. The Travel Health Pro website has a map of where schistosomiasis is found.

People often don't have any symptoms when they first become infected with schistosomiasis, but the parasite can remain in the body for many years and cause damage to organs such as the bladder, kidneys and liver. The infection can be easily treated with a short course of medicine.

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