Mother-to-child transmission(MTCT)is the main route of chronic hepatitis B virus(HBV)infection in China,and a systematic understanding of the mechanism MTCT of HBV and bloc-king strategies are of crucial for increasing the success rate of blocking.The combined immunization of hepatitis B immunoglobulin(HBIG)and hepatitis B vaccine(HepB)has achieved good efficacy,but failure in blocking often occurs.Intrauterine infection in pregnant women with high viral load is the main reason for failure,and the infection pathways include placental pathway,peripheral blood mono-nuclear cells(PBMCs)pathway,and infected germ cells pathway.Antiviral therapy during pregnancy can effectively block intrauterine infections,but various guidelines have not yet reached a consensus on the start time and the HBV DNA threshold.This paper summarized the mechanism and blocking strate-gies of MTCT in order to provide a reference for further increasing the success rate of blocking.
关键词
乙型肝炎病毒/母婴传播/宫内感染/乙型肝炎疫苗/联合免疫/抗病毒治疗
Key words
hepatitis B virus/mother-to-child transmission/intrauterine infection/hepatitis B vaccine/combined immunization/antiviral therapy
维普
万方数据