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1·Results The local and systemic effects reactions after the primary immunization and the booster immunization are slight and temporary. Abnormal liver .

结果初免和加强免疫后有轻微的一过性局部和全身反应，未见肝功异常。

2·Objective To determine the persistence of immune protection of China-made, plasma-derived hepatitis B vaccine in infants and the time table of booster immunization.

目的确定国产乙肝血源疫苗低剂量免疫保护持久性及用重组酵母乙肝疫苗加强免疫的免疫应答。

3·Objective To provide the health economic evidence for a potential booster immunization strategy for school children and for choosing best screening regimen for pregnant women.

目的为实施学龄期儿童加强免疫计划和选择孕妇最佳筛查方案提供卫生经济学的研究证据。