三峡库区土源性线虫感染现状流行病学调查

目的 了解三峡库区人体肠道寄生虫感染现状,为制定防治对策和评价防治效果提供科学依据.方法 在三峡库区15个区县,按东南西北四个方向,随机抽取4个村(居委会)为调查点.以本地常住人口为调查对象,采用统一问卷,调查人群的基本情况,包括年龄、性别、民族、文化程度、职业等,采用改良加藤厚涂片法查肠道蠕虫卵；采用透明胶纸肛拭法,检查3～12岁儿童蛲虫卵.结果 共调查30 820人,寄生虫感染者3 982人,总感染率为12.92％,各区县感染率在3.86％～24.90％之间,不同区县总感染率差异有统计学意义(x2=845.16,P＜0.01).蛔虫、钩虫、鞭虫、蛲虫感染率分别为8.62％、4.18％、0.57％、4.73％,蛔虫感染率高于其它3种(x2=2354.35,P＜0.01)；男性、女性感染率分别为12.82％、13.02％,差异无统计学意义(x2=0.59,P＞0.05).总感染率、蛔虫、钩虫感染率均以60～岁组最高,不同年龄组间差异有统计学意义(x2=184.32,P＜0.01).以学龄前儿童(13.64％)、农民(13.29％)、学生(11.61％)为高,明显高于其它职业人群(x2=41.23,P＜0.01).以文盲(18.24％)、小学(14.01％)、学龄前儿童(13.64％)为高,明显高于其它学历人群(x2=214.43,P＜0.01).钩虫感染率随年龄的增长而增加(F=43.86,P＜0.01).以感染1种寄生虫为主,占91.50％.结论 与第二次全国人体重要寄生虫病现状调查相比,三峡库区人群士源性线虫感染率大幅度下降,但其感染仍然普遍,感染以蛔虫为主,学龄前儿童、小学生和农民感染较高.

Investigation of prevalent status of soil-borne nematode in the Three Gorges Reservoir areas

Objective To understand the infection status of soil-borne nematode in the Three Gorges Reservoir areas and provide scientific evidence for the prevention and treatment of the disease. Methods 15 counties were selected in the Three Gorges Reservoir areas.The local populations of 4 villages from different directions were investigated by the same questionnaire. Stool samples were collected and examined by the Kato-Katz technique. The Enterobius vermicularis egg of children below 12 years old were examined by ...