慢性肝炎可导致肝硬化和肝细胞癌,乙型肝炎病毒(HBV)感染是全世界成人主要死因之一。按人群中慢性 HBV 携带者的流行率及其总感染率分类,世界各地存在若干不同类型的 HBV 感染。在美国,地方性流行的慢性 HBV 感染率很低(<1%),一些人口聚居的地区如东亚和东南亚,慢性 HBV 感染占人口7%以上,60%以上人口曾受 Chronic hepatitis can cause cirrhosis and hepatocellular carcinoma. Hepatitis B virus (HBV) infection is one of the leading causes of death in adults worldwide. According to the prevalence of chronic HBV carriers in the population and their overall prevalence, there are several different types of HBV infection worldwide. In the United States, the prevalence of endemic chronic HBV infection is very low (<1%). In some populated areas such as East and Southeast Asia, chronic HBV infection accounts for more than 7% of the population and more than 60% of the population have been affected