云南省人群绦虫感染情况调查

A SURVEY OF HUMAN TAPEWORM INFECTIONS IN YUNNAN PROVINCE

１９８８—１９９１年间，应用整群随机抽样方法，共调查５３０６１人，结果查见绦虫３种，其感染率分别为：带绦虫０．９％、缩小膜壳绦虫０．０２％、微小膜壳绦虫０．０１％。感染年龄最小的为２岁，最大的为８０岁。调查结果表明，不同年龄、民族、职业者的感染率间的差别具有显著意义。膜壳绦虫在我省呈散在分布，共查见１８例，以儿童感染为主。７例微小膜壳绦虫为我省首次发现。主要集中分布于兰坪、大理、景洪、永德和盈江５个县，感染率为０．７％—１７．４％。其中以兰坪县三界乡的普米族聚居地区人群的感染率最高，达４７．４％，其次为大理市周城乡（白族）的１０．７％，景洪曼听乡（傣族）的为６．３％。

During 1987-1991, an investigation on human cestode infections covering 53 061 inha bitants in 103 pilot sites from 28 counties in Yunnan Province was made by cluster and randomized sampling. The infection rates shown by fecal examination were as follows: Taenia sp. 0.9%, Hymenolepis diminuta 0.02%, H. nana 0.01%. Cestodes were found to be widely distributed in Yunnan, showing infection rate up to 2.2% in the northern part, but only 0.05% in the western part. Cestode infections were mainly concentrated in 5 counties: Lanpin, Dali, Jinhong, Yongde and Yinjiang, with infection rate ranged from 0.7% to 17.4%. The highest infection rate (47.4%) was viewed in Sangje township of Lanpin, which was successively followed by 10.7% in Zhoucheng township of Dali, and 6.3% in Manting township of Jinghong. The youngest victim was a 2 year old child while the oldest was a 80 year old person. The infection rates were demonstrated to vary considerably with sex, age, nationality and occupation. Hymenolepis was in scattered distribution; the most vulnerable group was children. Hymenolepis nana infection in 7 cases was the first record in Yunnan.