青海省牧业区人体寄生虫分布及分析

按全国人体寄生虫分布调查实施细则的要求，于１９８９－１９９１年间对青海省牧业区１０个调查点的４８３８人进行了调查，结果其寄生虫总感染率为３２．１％，共查见人体寄生虫１３种，其中蠕虫５种，原虫８种。各种寄生虫的感染率分别为：蛔虫１２．８％、鞭虫０．７％、溶组织内阿米巴０．５％、结肠内阿米巴７．６％、哈氏内阿米巴０．３％、微小内蜒阿米巴４．６％、布氏嗜碘阿米巴０．７％、贾第虫７．１％、结肠小袋纤毛虫０．０２％、人芽囊原虫２．２％、牛带绦虫１．２％；１２岁以下儿童蛲虫感染率为１５．５％（２１６／１３９７）；包虫病平均患病率为３．０％。蛔虫感染者中９９．８％为轻、中度感染者。多虫感染占１８．２％。结果提示，青海省牧业区蛔虫、蛲虫分布较广，感染水平亦属本区最高，尤以集体生活的少年儿童感染为重。但同我国其它部分地区相比，尚属低感染程度，这同高原大陆性气候相关密切。而流行分布最广、危害最重的乃属绦虫类疾病中的包虫病，这是我省寄生虫病防治工作的重点。

HUMAN PARASITE DISTRIBUTION IN PASTURAGE AREA OF QINGHAI PROVICE

An investigation on human parasites was conducted in 10 pilot sites in pasturage area of Qinghai, with 4 838 people under examination. A total infection rate of 32.1% was revealed. Of the 13 detected species of parasites, the respective infections were: Ascaris lumbricoides 12.8%, Trichuris trichiura 0.7%, Entamoeba histolytica 0.5%, Entamoeba coli 7.6% , Entamoeba hartmanni 0.3%, Endolimax nana 4.6%, Iodamoeba buetschlii 0.7%, Giardia lamblia 7.1%, Balantidium coli 0.02%, Blastocystis huminis 2.2%, Taenia saginata 1.2%, Enterobius vermicularis (below 12 years old) 15.5%,hydatid of Echinococcus sp. 3.0% . The results showed wild distribution and high prevalence of Ascaris and Enterobius infections, though less in infection rate and intensity than some other places due to the plateau climate. Hydatidosis, however, is the most hazardous parasitosis in Qinghai, so control practice is obliged to focus on this diseases.