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乙型肝炎是由乙肝病毒(HBV)引起的一种严重危害人类生命和健康的传染病。据调查,全球有20多亿人感染过乙肝病毒,其中有3亿人长期携带乙肝病毒。我国是乙肝高发区,通过对70万人的抽样调查,人群乙肝病毒感染率为45～60％,即至少有6亿人已感染过乙肝,乙肝表面抗原(HBsAg)携带率为7～12％,即约有1.2亿人携带乙肝病毒,其中1/3最终可能发展为慢性肝病,包括肝硬化和肝癌。我国现有慢性肝炎患者约
Hepatitis B is a contagious disease caused by hepatitis B virus (HBV), which seriously endangers human life and health. According to the survey, more than 2 billion people worldwide have been infected with hepatitis B virus, of which 300 million people carry the hepatitis B virus for a long period of time. China is a high incidence of hepatitis B, through a sampling survey of 700,000 people, the population of hepatitis B virus infection rate of 45 to 60%, that at least 600 million people have been infected with hepatitis B, hepatitis B surface antigen (HBsAg) carrier rate of 7 to 12% , About 120 million people carry the hepatitis B virus, of which 1/3 may eventually develop chronic liver disease, including cirrhosis and liver cancer. China’s existing chronic hepatitis patients about