西藏自治区人体寄生虫分布调查

本文报告１９８８年５月至１９９０年１０月，按全国人体寄生虫分布调查实施细则方法对本区１３个县３０个调查点进行人群寄生虫分布调查。实检率为７１．７％（１０３１５／１４３７９）。人群寄生虫总感染率为５１．６％（５３２５／１０３１５），共查见寄生虫２４种，其中包括原虫１０种、线虫９种和绦虫５种。各种寄生虫感染率分别为：溶组织内阿米巴８．１％、结肠内阿米巴１３．３％、哈氏内阿米巴１．５％、微小内蜒阿米巴３．３％、布氏嗜碘阿米巴８．５％、贾第虫８．２％、人毛滴虫０．０２％、结肠小袋纤毛虫０．０１％、人芽囊原虫０．３％、肉孢子虫１２．６％、蛔虫６．０％、鞭虫２．３％、钩虫０．３％、粪类圆线虫０．０１％、毛圆线虫０．０４％、蛲虫１１．５％、小杆属线虫０．０３％、旋毛虫２６．８％、带绦虫８．５％、缩小膜壳绦虫０．１％、微小膜壳绦虫１．５％、棘球蚴３４．９％和裂头蚴２１．４％。其中，小杆属线虫和毛圆线虫、哈氏内阿米巴，人毛滴虫、人芽囊原虫为我区首次报道。作者认为寄生虫感染率的高低与当地地理类型、经济、文化及生活习惯有关。

AN OVERVIEW OF HUMAN PARASITE DISTRIBUTION IN XIZANG

Being a part of the nationwide practice, a survey of human parasite distribution was undertaken in Xizang Autonomous Region from May 1988 to October 1990, covering 10 315 people residing in 30 pilot sites of 13 counties. The total infection rate in the study population was recorded as 51.6%, showing 24 species of parasites, i.e. 10 species of protozoa, 9 species of nematodes and 5 species of cestodes with infection rates as follows: Entamoeba histolytica 8.1%, Entamoeba coli 13.3%, Entamoeba hartmanni 1.5%, Endolimax nana 3.3% , Iodamoeba buetschlii 8.5%, Giardia lamblia 8.2%, Trichomonas hominis 0.02%, Balantidium coli 0.01%, Blastocystis hominis 0.3%, Sarcocystis sp.12.6% , Ascaris lumbricoides 6.0%, Trichuris trichiura 2.3%, Enterobius vermicularis 11.5%, hookworm 0.3%, Strongyloides stercoralis 0.01%, Trichostrongylus sp. 0.04%, Rhabditida sp.0.03%, Trichinella spiralis 26.8%, Taenia sp. 8.5%, Hymenolepis diminuta 0.1%, Hymenolepis nana 1.5%, Echinococcus sp. 34.9%, Diphyllobothrium sp. 21.4% (the critical situation of human parasitic infections in Xizang is noteworthy). Among the detected parasites, Entamoeba hartmanni, Trichomonas hominis, Blastocystis hominis, Rhabditida sp., Trichostrongylus sp. were the first records in situ . Topography, socioeconomic status as well as customs and habits of local inhabitants were deemed important in the prevalence of parasitic infections.