病毒性肝炎,虽已知由肝炎病毒所致,但其病原的分离迄今未获成功。自1965年发现肝炎相关抗原(HAA)以来,改变了病毒性肝炎的一些传统概念,并推动了肝炎的研究进展,使肝炎的研究进入了一个新的阶段。虽然目前仍有不少问题尚未彻底解决,但在病因学,流行病学,诊断和预防等方面均产生了新的认识和概念,为今后防治病毒 Although viral hepatitis is known to be caused by the hepatitis virus, its isolation has so far failed. Since the discovery of hepatitis-related antigen (HAA) in 1965, it has changed some traditional concepts of viral hepatitis and promoted the research progress of hepatitis, which has brought hepatitis research to a new stage. Although there are still many problems that have not yet been completely solved, new understandings and concepts have emerged in the areas of etiology, epidemiology, diagnosis and prevention,