There are a number of different families of blood fluke including the Schistosomatidae. Baracktrema obamai is a species of blood fluke, found in Malaysian freshwater turtles. The chronic urinary carrier state occurs in those who have schistosomiasis (parasitic blood fluke). "S. haematobium" was the first blood fluke discovered. "Gigantobilharzia lawayi", a schistosome (or blood fluke) may be carried in the capillaries. "Schistosoma bovis" is a digenetic, two-host blood fluke in cattle.