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ＴＴ病毒（ｔｒａｎｓｆｕｓｉｏｎｔｒａｎｓｍｉｔｔｅｄｖｉｒｕｓ，ＴＴＶ）于１９９７年底由Ｎｉｓｈｉｚａｗａ等〔１〕在日本的输血后非甲～非庚型肝炎患者血清中发现后，引起了我国学者的极大兴趣〔２～４〕。一般健康人群中ＴＴＶ感染状况的探讨，对认识ＴＴＶ的病原
TTV (transfusion transmitted virus, TTV) by the end of 1997 by Nishizawa et al 〔1〕 in Japan after transfusion of blood serum in patients with non-A to non-hepatitis G, has attracted great interest of our scholars 〔2 ~ 4〕. General healthy population in the investigation of the status of TTV infection, understanding of the pathogen of TTV