2009年重庆长寿区土源性寄生虫病现状调查

目的了解重庆长寿区土源性寄生虫病人群感染动态及影响因素，掌握流行规律，预测流行趋势，为制订土源性线虫病防治策略和评价防治效果提供科学依据。方法按东、西、南、北四个方位抽取4个乡镇的4个村为调查点：3周岁以上常住居民为对象．每个点调查人数不少于500人．采用改良加藤厚涂片法（一粪三检）常规计数检查土源性寄生虫卵．3～12周岁儿童加做透明胶纸肛拭法定性检查蛲虫卵。随机抽取一个点．进行感染因素调查和环境土壤污染情况调查，在调查点内随机抽取10户．每户采集菜园、厕所周边、庭院、厨房四类地点的土样1份检查蛔虫卯。结果本次检查共粪检2545人，检出虫种有蛔虫、钩虫、和蛲虫3种；感染者219人，感染率为8．61％．其中钩虫感染率最高，为7．82％：其次是蛲虫，为4．09％；蛔虫感染率为0．43％。检测土壤40份。菜园、厕所土壤蛔虫卵检出率为40％，庭院、厨房检出率为20％。结论长寿区人体土源性寄生虫病感染率呈下降态势．但是钩虫和蛲虫感染率仍较高．应用对农村人群集体服驱虫药治疗．尽快降低感染率。

Survey on Geohelminthes infection in Changshou District, Chongqing city in 2009

Objective To analyze the epidemic characteristics of Geohelminthes infection and provide scientific basis on making out strategies and evaluating the effect for Geohelminthes control. Methods 4 moni- toring points were investigated, which were selected from 4 townships according to the geographical distribution, Residents over 3 years old were tested with Kato-Katz thick smear method to check the eggs of tapeworms, round worms and pinworms in fecal samples, and cellophane anal swab was used for collecting Enterobius eggs in children between 3-12 years old. One point was randomly selected to survey infectious factors and eggs contamination in soil. 10 households were randomly selected in the point, and soil samples from the vegetable garden, lavatory, backyard and the kitchens were collected to examine roundworm eggs in each household. Results A total of 2545 people were examined, and 219 people were infected with geohelminthes. The total infection rate was 8.16% in the residents, and the infection rate of Hookworm, Enterobius and A scaris was 7.89%, 5.41% and 0.43%, respectively. Forty soil samples were checked, and the appearance rate of Ascariseggs was 40% in vegetable garden and lavatory, and 20% in backyard and kitchens. Conclusion The infection rate of Geohelminthes was decreased in Changshou, but the infection rate of Hookworm and Enterobius was still higher. The measure of mass medical treatment for rural residents should be taken to reduce the infection rate of the population.