青海省人群的肠道原虫感染状况

１９８８－１９９０年期间，我们采用卢戈氏碘液涂片法粪检原虫，共检查１６０７９人，查见原虫感染者２９６３例，其感染率为１８．４％。查见原虫９种，其感染率分别为：溶组织内阿米巴０．５％，结肠内阿米巴７．２％，布氏嗜碘阿米巴０．７％，微小内蜒阿米巴３．８％，哈氏内阿米巴０．３％，贾第虫４．６％，人芽囊原虫２．６％，人毛滴虫１．１％，结肠小袋纤毛虫０．０１％。各片区感染率分别为：城市为１０．０％，东海农业１８．９％，环湖牧区２２．６％，青南牧区２２．７％，４个片区感染率间差别有极显著意义。男、女感染率分别为１８．４％和１８．５％，两者间差别无显著意义。各民族人群的感染率分别为：汉族１３．３％，土族１４．４％，藏族２２．１％，回族２３．７％，蒙古族２７．７％，撒拉族５３．０％，各民族人群感染率间有极显著性差异。本次调查较全面地了解了本省人体肠道原虫的感染水平和分布特点。

ON HUMAN INTESTINAL PROTOZOAN INFECTIONS IN QINGHAI PROVINCE

Stool specimens of 16 079 persons from 32 spots were examined by iodine staining method during 1988-1990. Among the people examined, 2 963 were positive, the overall infection rate being 18.4%. Nine species of protozoa were detected during the survey,namely: Entamoeba histolytica (0.5%), Entamoeba coli (7.2%), Iodamoeba buetschlii (0.7%), Entamoeba nana (3.8%), Entamoeba hartmanni (0.3%), Giardia lamblia (4.6%), Blastocystis hominis (2.6%), Trichomonas hominis (1.1%), Balantidium coli (0.01%). No significant difference was found between males (18.4%) and females (18.5%) ( P > 0.05) . Nationality based infection rates were noted as 13.3% in Hans, and 14.4% in Tu, 22.1% in Zang, 23.7% in Hui, 27.7% in Menggu, and 53% in Sala minorities.