[Survey and analysis of epidemic status of principal human parasitosis in ecological region of Huaiyang hills of Henan Province in 2015].

To understand the epidemic status of principal human parasitosis in the ecological region of Huaiyang hills of Henan Province.According to the scheme of The 3rd National Survey of Principal Human Parasites made by National Institute of Parasitic Diseases, the survey was performed based on the ecological regions. The stratified cluster sampling was made combined with the economic and geographical conditions. The infections of intestinal helminths and protozoans in permanent residents were respectively detected by Kato-Kats technique and iodine solution. Trichuris trichiura infection was detected by the cellophane swab method in children aged 3 to 6 years.Totally 6 710 residents in 26 survey spots from 9 counties were detected, in which 528 children aged 3 to 6 years were detected for T. trichiura infection. Eleven kinds of parasites were found in this survey, including 5 species of helminthes and 6 species of protozoans. The infection rates of overall parasites, helminthes and protozoans were respectively 1.65%, 1.07% and 0.61%. The infection rate of T. trichiura in the children aged 3 to 6 years was 3.79%. Only 0.10 percent of the infections were co-infection, and all were infected by 2 kinds of parasites. The principal parasites in this district were Ascaris lumbricoides (0.31%), Blastocystis hominis (0.28%) and hookworm (0.27%). The T. trichiura infection rate among children was 3.79% by the cellophane swab method. The infections of protozoans were found in all age groups. In the group aged 9 years and below, the maximum kinds of parasites were found.The infection rates of principal human parasites in Huaiyang hilly ecological region of Henan have decreased sharply, but more efforts still should be paid on the prevention and control of parasitosis in children.[摘要]目的 了解河南省淮阳丘陵生态区人体肠道寄生虫病流行现状。 方法 按照全国第三次人体重点寄生虫病调 查方案及河南省的调查方案, 在生态区的基础上, 结合经济和地理条件进行分层整群抽样。对调查点常驻居民采用改良 加藤法和碘液涂片法分别检查肠道蠕虫和原虫感染情况, 3 ~ 6岁儿童用肛拭法检测蛲虫感染。 结果 河南省淮阳丘陵 生态区抽中9个县, 26个调查点, 共调查6 710人, 其中528名3 ~ 6岁儿童接受了蛲虫肛拭检查。共查出肠道寄生虫11 种, 总感染率1.65%, 其中蠕虫5种, 感染率1.07%; 原虫6种, 感染率0.61%; 儿童肛拭阳性率3.79%。混合感染占0.10%, 均为2虫种混合感染。主要肠道寄生虫为蛔虫0.31%、人芽囊原虫0.28%和钩虫0.27%。儿童肛拭蛲虫感染率3.79%。 原虫在各年龄组均有感染, 9岁及以下人群发现的寄生虫感染种类最多, 以蛲虫为主。经驱虫人群肠道寄生虫和土源性 线虫感染率均较未驱虫人群低。 结论 河南省淮阳丘陵生态区人体重点寄生虫感染率明显下降, 应加强对学龄前儿童 和学生的寄生虫病防治与监测工作。.