关键词: 寄生虫, 感染率, 流行病学调查

Abstract: The fecal specimens of 85741 individuals were examined in 166 selected areas of 40 counties or cities by sampling: Anyang, Puyang, Weihui, Weishi, Kaifeng, Yucheng, Minquan, Yuanyang, Neihuang, Taiqian, Yancheng, Fugou, Wuyang, Zhoukou, Xuchang, Zhecheng, Dancheng, Xiangcheng, Pingyu, Suiping, Luoshan, Huang-chuan, Huaibin, Tongbai, Nanyang, Tanghe, Dengzhou, Neixiang, Nanzhao, Yanshi, Qinyang, Yuzhou, Jiaozuo, Mixian, Linxian, Shanxian, Baofeng, Yiyang, Luan-chuan, Changge. Eight species of intestinal nematodes were found during the survey, namely, Ascaris lumbricoides, Ancylostoma duodenale, Necator americanus, Trichuris trichiura, Enterobius vermicularis, Trichostrongylus orienialis, Strongyloides stercoralis, Oesophagostomum; the average infection rates were 44.6%, 15.9%, 2.8%, 8.4%, 21.7%, 0.1%, 0.2% and 0.1% respectively. The average infection rates for Taenia so/mm, Hymenolepis diminuta and Hymenolepis nana were respectively 0.1%, 0.1% and 0.2%; while those for Clonorchis sinensis and Fasctola hepatica were 0.3% and 0.1%, respectively. The average infection rates for Entamoeba histolytica, Entamoeba coli, Entamoeba hartmanni, Endolimax nana, Giardia lamblia, Blastocystis hominis, Trichomonas intestinalis, Dientamoeba fragilis, Chilomastix mesnili, lodamoeba buets-chlii and Balantidium coli were 0.7%, 4.8%, 3.1%, 6.0%, 7.2%, 1.8%, 0.1%, 0.6%, 0.4%, 1.1% and 0.1% respectively. The total infection rate was 64.6%, whereas that of male was 64.9% and females, 66.0% (u = 2.36, P0.05).In Nanyang Basin, East Henan Plain, South Heaan Hilly area, Northeast Henan Plain and Northwest Henan Mountainous region, the infection rates of human parasites were 76.3%, 68.8%, 67.2%, 63.3% and 64.4% respectively