Flukes or trematodes are parasites that cause cause a variety of infections in humans. Flukes are classified as blood flukes, liver flukes, lung flukes, and intestinal flukes.
Fascioliasis is a parasitic condition caused by a flatworm, Fasciola. It is primarily a disease of animals but can be transmitted to humans.
Schistosomiasis, also known as Bilharziasis, is caused by a blood fluke whose larvae contaminate fresh water where humans contract the disease by wading, swimming, or bathing.