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自从系统地应用敏感的特异性血清学试验诊断甲型及乙型肝炎以来,发现一些具有传染病特点,但缺乏病毒血清学证据的急性和慢性肝炎,称之为非甲非乙肝炎(NANB)。由于在药瘾者及血友病患者中出现两次以上急性肝炎发作;潜伏期介于甲型与乙型肝炎之间;大多数输血后肝炎患者血清HBsAg(-),用敏感的方法筛选供血者HBsAg,只能有限地减少受血者肝炎的频率;受血者抗-HBs(+),不能保护其不发生输血后肝炎;取消了以卖血为生的供血者,不仅减少了输血后乙型肝炎的频率,而且也减少了非
Since the systematic application of sensitive specific serological tests for the diagnosis of hepatitis A and B, some acute and chronic hepatitis characterized by infectious diseases but lacking viral serological evidence have been found, which is called non-A non-B hepatitis (NANB) . Because of two or more episodes of acute hepatitis among drug addicts and hemophiliacs, the incubation period is between Type A and B. Most of the HBsAg (-) serum from post-transfusion hepatitis patients is screened by a sensitive method for donors HBsAg, can only be limited to reduce the frequency of hepatitis recipients; recipients of anti-HBs (+), can not protect it from post-transfusion hepatitis; abolition of selling blood for blood donors, not only reduces the blood transfusion B Hepatitis type frequency, but also reduced the non