为了解我市中小学生肠道寄生虫感染情况,我站于1985年5月,用沉淀集卵法,对城关地区4所中小学学生3176人进行了调查,查出各种肠道寄生虫感染者722人,阳性率为72％。其中受蛔虫、鞭虫、钩虫、姜片虫、蛲虫虫卵感染者,分别为590人、110人、12人、7和3人。阳性率依次为18.6％、3.5％、0.4％、0.2％及0.19％。 In order to understand the intestinal parasitic infections of primary and secondary school students in our city, I stood in May 1985, using precipitation sedimentation method to investigate 3176 students from 4 primary and secondary schools in Chengguan area and found out various intestinal parasitic infections 722 people, the positive rate was 72%. One by the roundworm, whipworm, hookworm, ginger, wormworm eggs were 590, 110, 12, 7 and 3 people. The positive rates were 18.6%, 3.5%, 0.4%, 0.2% and 0.19%, respectively.