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我们于1990年6～7月,按全国人体寄生虫分布调查实施细则对人均年收入不足200元的川南山区苗族汉族杂居的兴文县×村小学在校小学生进行调查。共调查116名,实查率为95.9%。结果查出寄生虫感染者115例,总感染率为99.1%,男、女生的感染率分别为98.7%(75/76)和100%(40/40)。6～、9～和12～14岁年龄组的感染率依次为100%(53/53)、97.1%(33/34)和100%(29/29)。查见3
From June to July 1990, we surveyed primary school pupils in Xingwen County × Village primary school in Huanan County, Miao and Han nationalities with a per capita annual income of less than 200 yuan in accordance with the national survey on the distribution of human parasites. A total of 116 surveyed, the actual examination rate was 95.9%. Results Among the 115 parasitic infections, the total infection rate was 99.1%. The infection rates of male and female were 98.7% (75/76) and 100% (40/40) respectively. The infection rates of 6 ~, 9 ~ and 12 ~ 14 age groups were 100% (53/53), 97.1% (33/34) and 100% (29/29), respectively. See 3