本文作者报告了日本与输血无关的散发性急性非甲非乙型肝炎的流行病学和临床结果,并与散发性急性甲型肝炎和乙型肝炎作了比较。在1976年1月～1982年12月的7年间,日本 Shinshu 大学医院及其附属医院总共收住了258例15岁以上的散发性急性病毒性肝炎患者。在三型病毒性肝炎中,以非甲非乙型肝炎最为常见,有118例,占全部病例的46%;70例(27%)为甲型肝炎;70例(27%)为乙型肝炎。在非甲非乙型肝炎病例中,女性和男性的病例数几乎相等,性别比(F/M) The authors report on the epidemiological and clinical results of sporadic acute non-A, non-B blood transfusions in Japan and compared them to sporadic acute hepatitis A and B. In the seven years between January 1976 and December 1982, Shinshu University Hospital in Japan and its affiliated hospitals had a total of 258 patients with sporadic acute viral hepatitis over the age of 15 years. Of the three types of viral hepatitis, non-A, non-B, hepatitis B was the most common, 118 (46% of all cases), 70 (27%) were Hepatitis A and 70 (27%) were Hepatitis B . In cases of non-A, non-B hepatitis, the number of women and men is almost the same, and the sex ratio (F / M)