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于１９８７－１９９０年，我们应用分层整群随机抽样的方法，对云南省２８个县１０３个点进行了人体肠道寄生虫调查，每县查３－５个点，每点５００人，共检查５３０６１人。全省寄生虫总感染率为７６．３％，其中查见肠道原虫１０种，包括溶组织内阿米巴（２．５％）、贾第虫（２．５％）、结肠内阿米巴（６．２％）、哈氏内阿米巴（２．１％）、微小内蜒阿米巴（５．２％）、布氏嗜碘阿米巴（１．７％）、人芽囊原虫（７．０％）、隐孢子虫（２．３％，２／８７）、人毛滴虫和等孢球虫。并对溶组织内阿米巴、贾第虫和人芽囊原虫３种致病性原虫的人群的地理分布及其流行因素进行讨论。
In 1987-1990, we applied a stratified cluster random sampling method to investigate human intestinal parasites in 103 sites in 28 counties in Yunnan Province. Each county investigated 3-5 sites with 500 individuals at a time. Check 53061 people. The total infection rate of parasites in the whole province was 76.3%, among which 10 species of intestinal protozoa were found, including Entamoeba histolytica (2.5%), Giardia (2.5%), and Ami in the colon. Bar (6.2%), Hastellemae (2.1%), Mesophyll amoeba (5.2%), Brinell iodine amoeba (1.7%), Human buds Cysticercus (7.0%), Cryptosporidium (2.3%, 2/87), Trichomonas human, and Isospora. The geographical distribution and epidemic factors of three groups of pathogenic protozoa of Entamoeba histolytica, Giardia and Blastocystis were discussed.