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除甲型和乙型肝炎外,还存在非甲非乙型肝炎(以下简称NANB肝炎)。NANB肝炎与输血后肝炎,散发的非乙型肝炎、非乙型的暴发型肝炎和非乙型的慢性肝炎均有很密切的关系。NANB肝炎的病因可能是病毒。已将NANB肝炎从人传播给黑猩猩,并有人报告发现肝炎“丙”抗原,用免疫电镜已初步观察到与NANB肝炎相关的类病毒颗粒。目前,排除甲型、乙型肝炎及其他病毒性肝炎是诊断NANB肝炎的唯一方法。
In addition to hepatitis A and B, there is also non-A, non-B hepatitis (hereinafter referred to as NANB hepatitis). NANB hepatitis and post-transfusion hepatitis, excreted non-Hepatitis B, non-B-type fulminant hepatitis and non-B-type chronic hepatitis are closely related. The cause of NANB hepatitis may be a virus. NANB hepatitis has been transmitted from humans to chimpanzees and it was reported that hepatitis “C” antigens were detected, and virus-like particles associated with NANB hepatitis have been initially observed using immunoelectron microscopy. At present, excluding hepatitis A and hepatitis B and other viral hepatitis is the only way to diagnose NANB hepatitis.