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乙型肝炎垂直感染是指乙型肝炎或无症状携带HBsAg(乙型肝炎表面抗原简称)的孕妇,在分娩期或分娩时将乙型肝炎病毒(HBV)传给婴儿,婴儿于出今后HBsAg即阳性或6个月内转为阳性或发生乙型肝炎者。因此又称母婴传播。影响母婴传播的因素 HBsAg是组成HBV的小球体、管状体及Dane颗粒的衣膜,不含核酸,具有抗原性,是母婴传播中的一项指标。有报告HBsAg无症状携带者传染性的强弱决定于HBsAg滴度的
Hepatitis B vertical infection refers to hepatitis B or asymptomatic pregnant women carrying HBsAg (hepatitis B surface antigen short), in the childbirth or delivery of hepatitis B virus (HBV) to the baby, the baby after the onset of HBsAg Positive or within 6 months turned positive or hepatitis B were. So also known as mother-to-child transmission. Factors affecting the transmission of mother to child HBsAg is composed of HBV pellet, tubular body and Dane particles membrane, nucleic acid-free, antigenic, is an indicator of mother-to-child transmission. It has been reported that asymptomatic carriers of HBsAg infectivity depends on the HBsAg titer