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乙型肝炎(hepatitis B)是由乙型肝炎病毒(hepatitis B virus,HBV)引起的一种严重危害人类健康的世界性传染病,是世界卫生组织重点监控的卫生问题。全球约20亿人曾感染HBV,其中3.5~4亿人为慢性HBV感染者,约占全球人口6%,每年有100万慢性乙型肝炎患者死亡。我国是乙型肝炎高发
Hepatitis B is a worldwide infectious disease caused by hepatitis B virus (HBV), which is a serious health hazard caused by human beings. Hepatitis B is a health problem that is closely monitored by the World Health Organization. About 2 billion people worldwide have been infected with HBV, of which 350 to 400 million are people with chronic HBV infection, accounting for about 6% of the global population. One million people die of chronic hepatitis B each year. China is a high incidence of hepatitis B.