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乙型肝炎(乙肝)是由乙型肝炎病毒(乙肝病毒)引起的严重危害人民健康的传染病,主要通过血液、医源、性生活和母婴等途径传播,是急慢性肝炎、肝硬化及肝癌的重要原因.成人感染乙肝病毒多数都可以痊愈,但婴幼儿感染则多数成为慢性持续性感染者.1979年全国乙肝流行病调查人群中乙肝病毒表面抗原(hepatitis B surface antigen,HBsAg)平均携带率为9.76%,儿童4岁时HBsAg携带率就已达或接近高
Hepatitis B (Hepatitis B) is an infectious disease caused by Hepatitis B virus (Hepatitis B virus) that seriously affects people’s health. Hepatitis B (Hepatitis B) is transmitted mainly through blood, iatrogenic, sexual and maternal infants. It is an acute and chronic hepatitis, cirrhosis and Liver cancer is an important reason for the majority of adult infected with hepatitis B virus can be cured, but the majority of infant and young child infections are chronic persistent infection in 1979 the national hepatitis B epidemiology survey population of hepatitis B virus surface antigen (HBsAg) average carrying The rate of 9.76%, children 4 years old HBsAg carrier rate has reached or nearly high