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为了解我区儿童HBV感染现状,我们于1991年4～10月,按随机抽样的原则,抽取本区丰台街道、长辛店街道、右安门街道、南苑乡及长辛店乡5个地区2～6岁儿童,共2435名(其中男1278名,女1157名),采集肘静脉血2ml,进行血清流行病学调查(有乙肝疫苗注射史的儿童不在本次调查范围之内)。
In order to understand the status quo of children with HBV infection in our district from April to October in 1991, we randomly selected 5 districts of Fengtai Street, Changxindian Street, You’anmen Street, Nanyuan Township and Changxindian Township in accordance with the principle of random sampling A total of 2435 children (1278 males and 1157 females) aged 2 to 6 years were enrolled in this study. Blood samples of 2 cubital vein were collected for serological epidemiological investigation (children with hepatitis B vaccine history were excluded from this survey).