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为保护儿童青少年身体健康，为了解目前我区中、小学生蛔虫病流行的现状和规律，以便制定防治措施，降低我区中、小学生蛔虫感染率．我们于1989年用饱和盐水漂浮法对我区中、小学生蛔虫感染状况进行了调查．共检查4706名学生的粪便，蛔虫感染本为冬48.4％．男、女生的感染率分?
To protect the health of children and adolescents, in order to understand the current situation in our district, primary and secondary ascariasis prevalence in order to develop prevention and control measures to reduce my district primary and secondary infection rate of roundworms. In 1989, we investigated the status of roundworm infection among primary and secondary school students in our district by means of saturated saline floating method. A total of 4706 students were examined for faeces, with Ascaris infection of 48.4% in winter. Male and female infection rate points?