The most important of the Trematodes in its effect on man is Schistostomum (Bilharzia).
I've heard that there is a problem with something called bilharzia in Lake Malawi, where I was planning on staying a while.
Both male and female gonoducts open through acornmon atrium to the exterior by tkis pore, but in three bisexual genera the male and female ducts are developed in separate individuals (Bilharzia, Didymozoon, Koellikeria).
A family history of the disease, or chronic infection with the tropical diseases bilharzia also increase the risk of bladder cancer.
Diseases related to poor sanitation include dysentery, hepatitis, bilharzia, guinea worm, hook worm and tape worm.
