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我科1998年以来对住院治疗的662例肝炎患者采用巢式PCR法常规检测血液中的输血传播病毒脱氧核糖核酸（TTVDNA），并同步检测血中其它病毒性肝炎指标，结果发现25例（3.7％）单纯或合并TTV感染者，其中2例单纯TTV感染者发展为慢性重型肝炎而死亡。现报告如下。例1男，52岁，因反
Our department routinely detected the blood transfusion transmitted virus DNA (TTVDNA) by nested PCR in 662 patients with hepatitis treated in our hospital since 1998 and simultaneously detected the indexes of other viral hepatitis in blood. It was found that 25 (3.7 %) Simple or combined TTV infection, of which 2 cases of pure TTV infection developed into chronic severe hepatitis and died. The report is as follows. Example 1 male, 52 years old, due to anti