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近年来，中小学生乙型肝炎病毒感染率有不断上升的趋势，严重危害着儿童青少年的身心健康。为探索ＨＢＶ在儿童青少年中的流行规律及感染因素，并为郑州地区乙肝早期防治工作提供依据。我们于１９９８年２月对郑州市郊区６１４１名中小学生进行了乙肝血清学抽样调查。对象和方
In recent years, primary and secondary hepatitis B virus infection rates are on the rise, seriously endangering the physical and mental health of children and adolescents. In order to explore the prevalence of HBV in children and adolescents in the law and infection factors, and provide a basis for early prevention and treatment of hepatitis B in Zhengzhou. We conducted a Hepatitis B serological sampling survey on 6141 primary and secondary school students in the suburbs of Zhengzhou City in February 1998. Objects and parties