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为了解我区中小学生HBsAg的阳性感染情况,我们于1996年对4所学校进行了调查,现将结果通报如下: 1 对象与方法 1.1 调查对象:辖区市内中学2所,小学1所,乡高
In order to understand the HBsAg positive infection of elementary and middle school students in our district, we conducted a survey on 4 schools in 1996, and the results are reported as follows: 1 Subjects and Methods 1.1 Surveyed Subjects: 2 secondary schools, 1 primary school, high