持续或慢性HBV感染通常称为HBsAg携带状态或慢性HBsAg携带者(HBsAg血症持续6个月以上),狭义的携带状态是指无临床和明显实验室检查异常的持续HBV感染。本文采用广义的说法,并将HBsAg携带者分为无症状,有肝炎史和慢肝携带者三类。我国HBsAg携带者约1亿人(全世界约2.5亿人),这些携带者一方面构成乙旰的传染源。另一方面与各种肝病有密切的关系。对众多的HBsAg携带者(尤其是无症状携带者, Persistent or chronic HBV infection is commonly referred to as HBsAg-carrying or chronic HBsAg carriers (HBsAg persistence lasts longer than 6 months). In a narrow sense, the carrying status refers to a persistent HBV infection without clinically and manifest laboratory abnormalities. This article uses a broad sense, and will be divided into HBsAg carriers asymptomatic, history of hepatitis and chronic liver carriers in three categories. About 100 million HBsAg carriers in China (about 250 million people around the world), these carriers on the one hand form the source of infection B. On the other hand with a variety of liver diseases are closely related. For many HBsAg carriers (especially asymptomatic carriers,