似蚓蛔线虫简称蛔虫，成虫寄生在人体小肠。感染蛔虫后，除出现消化系统症状外，还会出现呼吸系统症状，这是为什么呢？只有先了解蛔虫的生活史，才能避免误诊。蛔虫生活史包括虫卵在外界土壤中发育、幼虫在人体内移行和发育、成虫在小肠内寄生。人误食感染性虫卵，在小肠内， As wormworm worms referred to roundworm, adult parasites in the human small intestine. Infection with roundworms, in addition to digestive symptoms, there will be respiratory symptoms, which is why? Only first understand the life history of roundworms, to avoid misdiagnosis. Roundworm life history, including the development of eggs in the outside world, larvae in the human body migration and development, adult parasites in the small intestine. People eat infected eggs, in the small intestine,