云霄县土源性寄生虫感染现状调查

Investigation on current status of infections of soil-borne nematodes in Yunxiao County

目的了解云霄县土源性线虫感染现状及分布特点,为制定土源性寄生虫病防治策略提供参考依据。方法采取分层整群随机抽样法选择调查对象,采用Kato Katz法检查蛔虫、钩虫和鞭虫感染,透明胶纸肛拭法检查儿童蛲虫感染情况,以问卷形式记录调查对象的性别、年龄、受教育程度以及相关流行因素。结果全县共调查4个镇21个村2 002人,查出土源性线虫感染169人,感染率为8.44%。钩虫、鞭虫和蛔虫感染率分别为4.35%、1.70%和0.15%,儿童蛲虫感染率为13.48%(43/319);7岁以下和45岁以上人群感染率较高,女性感染率高于男性,感染率随文化程度升高而降低。结论云霄县人群土源性线虫感染率呈下降趋势,但在以种植经济作物为主的乡村钩虫感染率仍然较高;儿童蛲虫感染率仍处于较高水平,应引起重视。

Objective To understand the endemic situation of soil-borne nematodes and their distribution characteristics, so as to provide the evidence for formulating prevention strategy. Methods According to The Survey Program of Important Human Parasitic Diseases in Fujian Province, the survey spots were determined by the stratified cluster randomly sampling method. The eggs ofAscaris lumbricoides, hookworm and Trichuris trichiura in feces were detected by Kato-Katz technique; the eggs of Enterobius vermicularis were checked by rectal swabs using transparent adhesive tape. A questionnaire survey was performed for recording the gender, age, education levels and related epidemiological factors. Results Altogether 2002 residents in 21 villages of 4 towns were investigated. There were 169 residents infected with soil-borne nematodes （8.44%）. The infection rates of hookworm, Trichuris trichiura and Ascaris lumbricoides were 4.35%, 1.70% and 0.15% respectively. The infection rate of Enterobius vermicularis was 13.48% （43/319） in children. The infection rates of soil-borne nematodes were higher in children aged below 7 years and residents aged above 45 years, and the infection rate was higher in the women than in the men. The infection rates were negative correlated with the education levels. Conclusion The prevalence of soil-borne nematodes has a reduction trend in Yunxiao County. However, the infection rate of hookworm is still high in areas of mainly planting economic crops. The infection rate of Enterobius vermicularis is still high in children, and we should pay more attention to it.