近年来病毒性肝炎(以下简称肝炎)的研究进展较快,特别在病原学、流行病学和免疫学方而已澄清了不少问题,然而在临床方面,尚缺乏完善的诊断方法和标准,特别是轻症无黄疸型病例,在无明显症状及体征时,诊断更为困难。病毒性肝炎至少由三种不同的病毒所引起。1976年美国报告了近 In recent years, research on viral hepatitis (hereinafter referred to as hepatitis) has progressed rapidly, and many problems have been clarified, especially in the fields of etiology, epidemiology and immunology. However, there are still a lot of clinical diagnostic methods and standards, especially Is a mild case of jaundice in the absence of obvious symptoms and signs, the diagnosis is more difficult. Viral hepatitis is caused by at least three different viruses. The United States reported in 1976