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为了解洛阳市部分中、小学生乙型肝表面抗原（HBsAg）感染率及表面抗体（抗一HBs）现状，我们对市区部分中、小学生HBSAg携带率和抗一H已情况进行监测分析。结果如下。1材料与方法1．1调查对象：市属28所在校全部6－18岁中、小学生。对27642人进行M初吨检测。对2790人进行抗一?
To understand the prevalence of HBsAg and HBsAg in primary and secondary school students in Luoyang City, we monitored the prevalence of HBsAg and anti-HBs in primary and secondary school students in urban areas. The result is as follows. 1 Materials and Methods 1.1 Survey: 28 municipal schools all 6-18 years old primary and secondary students. 27 642 people M early tons of testing. 2790 people against one?