What disease does Schistosoma spp cause?
Schistosomiasis, also known as snail fever, bilharzia, and Katayama fever, is a disease caused by parasitic flatworms called schistosomes. The urinary tract or the intestines may be infected. Symptoms include abdominal pain, diarrhea, bloody stool, or blood in the urine.
What is the infective stage of Schistosoma spp?
The stages in the snail include two generations of sporocysts and the production of cercariae. Upon release from the snail, the infective cercariae swim and penetrate the skin of the human host, where maturation of the worms continues.
What is schistosomiasis PDF?
Schistosomiasis (bilharzia) is a neglected tropical disease caused by parasitic flatworms (blood flukes) of the genus Schistosoma, with considerable morbidity in parts of the Middle East, South America, Southeast Asia and, particularly, in sub-Saharan Africa.
What are two symptoms of schistosomiasis?
Within 1-2 months of infection, symptoms may develop including fever, chills, cough, and muscle aches. Without treatment, schistosomiasis can persist for years. Signs and symptoms of chronic schistosomiasis include: abdominal pain, enlarged liver, blood in the stool or blood in the urine, and problems passing urine.
Is schistosomiasis a virus or bacteria?
Schistosomiasis, also known as bilharzia, is a disease caused by parasitic worms. Infection with Schistosoma mansoni, S. haematobium, and S. japonicum causes illness in humans; less commonly, S.
What is Schistosomiasis life cycle?
Life cycle: Eggs are eliminated with feces or urine (1). Under optimal conditions, the eggs hatch and release miracidia (2), which swim and penetrate specific snail intermediate hosts (3). The stages in the snail include two generations of sporocysts (4) and the production of cercariae (5).
What is the life cycle of Schistosoma?
Schistosomes have a complex life cycle, in which cercariae, free-living in fresh water, can penetrate healthy human skin. The head of the cercaria transforms into an endoparasitic larva, the schistomule.
Which organism causes schistosomiasis?
Schistosomiasis, also called bilharzia or bilharziasis, group of chronic disorders caused by small, parasitic flatworms (family Schistosomatidae) commonly called blood fluke s. Schistosomiasis is characterized by inflammation of the intestines, bladder, liver, and other organs.
What does Schistosoma mean?
Schistosoma. A genus of digenetic trematodes, including the important blood flukes of humans and domestic animals, which cause schistosomiasis ; characterized by elongate shape, by marked sexual dimorphism, by their unusual location in the smaller blood vessels of their host, and by use of water snails as intermediate hosts.