What's the difference between a blood-sucking worm and a schistosoma

Bloodsuckers and schistosomiasis are not the same parasites.

When people say bloodsucking insects, they often refer to leeches, also known as leeches, which are extracorporeal parasites that suck blood or eat rotting meat. Its body is long, flat, slightly fusiform, and there are two suction cups before and after it can be attached to the human and animal body surface. Leeches live in paddy fields, rivers, rice fields, lakes, ditches and shallow water dirty ponds and so on. They have distribution all over our country and have many types. The dried animals of Whitmania pigra, Whitmania acranulata, Hirudo nipponica and other species of leeches were all recognized as Chinese medicinal materials by the Pharmacopoeia of the People's Republic of China. "Shennong Herbal Classic" said that it can "expel evil blood and blood stasis" and break the "accumulation of blood mass".

Schistosoma, also known as schistosoma, is a fluke that lives in the blood vessels of vertebrates. There are seven main species of schistosoma that can infect humans and cause disease, Schistosoma japonicum, Schistosoma mansoni, Schistosoma haematobium, Schistosoma haematobium, and Schistosoma intercalatum, Schistosoma mekongi, Schistosoma malayensis, and Schistosoma guineensis. The first three are the most widespread and the most harmful. The development of schistosomiasis is divided into seven stages: egg, cercaria, mother, daughter, cercaria, child and adult. Cercaria is the stage that can infect human body. The cercaria can invade the human body when it comes into contact with the human body surface in water. Experiments have shown that host animals can be infected as long as they are exposed to cercaria for 10 seconds.