Trematodes

Fascioliasis is a zoonotic parasitic disease caused by fasciola hepatica and fasciola gigantica parasitizing in the hepatobiliary ducts or humans of herbivorous mammals. The host selection is not strict, and the human body is not a suitable host. Therefore, there are many choices of parasitic worms in human parasites, and the clinical manifestations are more complex and serious. The main manifestations are the acute symptoms caused by the worms in the abdominal cavity and the liver, and the adult. Chronic stage of bile duct inflammation and hyperplasia. Discovered by De Brie in 1379, both Lucat and Thomas later investigated their entire life history in 1883. The disease is endemic worldwide. China is also very common, showing a regional epidemic.