Background:Since the discovery of the Australia antigen by Blumberg and Visnich in 1964,the cases of HBV infecton have been increasingly rising over the world.

• 自1964年Blumberg和Visnich发现乙型肝炎病毒表面抗原(HBsAg)以来，证实感染乙型肝炎病毒(HBV)的人数日趋增多，遍及世界各地。