近年来的研究发现,即使采用最敏感的血清学技术对血源进行乙型肝炎表面抗原(HBsAg)筛选,也不能完全杜绝输血后肝炎的发生。在用血清学、临床学和流行病学的方法排除了甲型肝炎、乙型肝炎和其它已知病毒的感染后,确认尚有另外一种类型的病毒性肝炎也可经血液传播。目前把这种病原体尚未查明的病毒性肝炎统称为非甲非乙型肝炎。由于乙型肝炎 In recent years, the study found that even the most sensitive serological techniques for screening blood for hepatitis B surface antigen (HBsAg), can not completely eliminate the occurrence of post-transfusion hepatitis. After the infection of Hepatitis A, Hepatitis B and other known viruses has been ruled out by serological, clinical and epidemiological methods, it is confirmed that there is another type of viral hepatitis that can also be transmitted by blood. At present, this pathogen has not yet been identified as viral hepatitis collectively referred to as non-A, non-B hepatitis. Because of hepatitis B