Roundworm

Ascariasis is a disease caused by Ascaris lumbricoides or Ascaris lumbricoides in the human small intestine. Ascaris lumbricoides are widely distributed in China. Pork maggots are distributed in North China, Northeast China, and Northwestern China. The endemic areas are only found in Yunnan. Beef maggots are endemic in southwestern provinces and Tibet, Inner Mongolia, and Xinjiang. It is closely related to eating habits and improper pig and cattle breeding methods. Adults of roundworms parasitize in the human small intestine. Adults live in the human intestine from years to 20 years.