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一、防治前感染率的调查:1、调查方法:采用大便涂片直接镜检法。为提高镜检阳性率,用饱和盐水漂浮法每份大便制作三张玻片。2、调查结果:共对城乡5所中小学校的380名中小学生进行了调查。共查出大便虫卵阳性182人,感染率为47.85%,其中城镇感染率为44.09%(61/169)农村感染为50.68%(111/219)。钩虫卵占
First, the prevention of infection before the survey: 1, survey methods: stool smear direct microscopy. To increase the positive rate of microscopy, make three slides per stool with saturated saline floatation. 2, the survey results: a total of 380 primary and secondary schools in urban and rural primary and secondary schools were investigated. A total of 182 stool eggs were detected and the infection rate was 47.85%. Among them, the infection rate in urban areas was 44.09% (61/169) and the rural infection was 50.68% (111/219). Hook eggs accounted for