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乙型肝炎病毒,乙型肝炎表面抗原简称(HBsAg),HBsAg持续阳性者又叫病毒携带者。在社会人群中大量慢性持续病毒携带者,大部分来自HBV阳性的母亲;对出生的婴儿多在出生后3个月左右转为HBsAg阳性。70～90％成为HBV慢性携带者。所以应重视母婴的乙肝传染。阻断乙肝的母婴传播最好的方法为联合免疫法:即乙肝免疫球蛋白)HBIG(和乙肝疫苗两种联合应用。免疫对象主要是HBsAg阳性孕产妇的婴儿,特别是e抗原阳性的孕
Hepatitis B virus, hepatitis B surface antigen short (HBsAg), HBsAg persistent positive, also known as virus carriers. Most of the chronic persistent virus carriers in the social population are from HBV-positive mothers; most of the babies born are converted to HBsAg positive at about 3 months after birth. 70 ~ 90% become chronic carriers of HBV. Therefore, we should pay attention to mother-to-child hepatitis B infection. The best way to block the mother-to-child transmission of hepatitis B is the combination immunization: hepatitis B immunoglobulin (HBIG) (in combination with hepatitis B vaccine), which are mainly used for babies with HBsAg-positive mothers, especially those with positive e-antigen