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为了解市郊农村儿童统虫感染情况，于1988～1989年我们整群分层随机选择所辖3个县、市、区各4所农村小学，采用透明胶纸肛拭法，对5～14岁在校1395名学生进行检查，结果晚虫感染率为26％；男、女生的感染率分别为24．60％（183／744）和27.65％（180／651），两性间无显著性差?
In order to understand the infection of children in the suburb of the countryside, we systematically selected 4 rural primary schools in 3 counties, cities and districts under random control from 1988 to 1989, The results showed that the infection rate of late-worms was 26%. The infection rates of male and female were 24.60% (183/744) and 27.65% (180/651), respectively. There was no significant difference between the two sexes.