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作者选择195名HBsAg阳性母亲所生的健康婴儿分为两组,第1组102人在出生后2小时内肌肉注射1ml乙型肝炎免疫球蛋白(HBIg),并分别在3、4、5和11月龄接种1ml
The authors selected 195 healthy infants born to HBsAg-positive mothers as two groups, with 102 in group 1 being intramuscularly injected with 1 ml of hepatitis B immunoglobulin (HBIg) within 2 hours of birth and in groups of 3, 4, 5 and 11 months old vaccination 1ml