论文部分内容阅读
前言乙型肝炎分布广泛,目前全世界约有2亿HBsAg(Hepatitis B Surface Antigen)携带者,以非洲和亚洲国家人口的携带率较高,而北美及西欧则较低。据报道,我国HBsAg携带者约8000万人。HBV主要通过输血、血液制品注射和生活密切接触等途径在人群中传播,但原因不明的受染者为数不少。流行病学调查及实验室研究都证明HBsAg携带率除与民族、遗传、气候以及
Preface Hepatitis B is widely distributed. Currently, there are about 200 million Hepatitis B Surface Antigen carriers in the world, carrying more people in Africa and Asia, while North America and Western Europe have lower rates. It is reported that about 80 million HBsAg carriers in China. HBV is mainly transmitted through blood transfusion, blood product injection and close contact with life, but there are a large number of infected people with unknown causes. Epidemiological studies and laboratory studies have proved that HBsAg carrier rate in addition to ethnic, genetic, climate and