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据《医学世界报导》1985年3月报道,根据美国亚特大的传染病中心报告,1984年4月1日～12月30日在印第安纳州的1个县发生9例乙型肝炎病毒(HBV)感染,且其中2例死亡。9例病人除1例外,曾在3～5个月前由1个牙科医师治牙,而后来查明这个牙科医师是个HBsAg阳性者,他在给病人治牙时,没有常规带手套。这些病人除1例其家属有1人有HBV感染的证据外,病史中均无HBV感染的危险因素,亦无服用肝毒性药物。该牙科医师以及7例病人,δ因子的抗体和抗原试验均阴性。
According to the Medical World Report, reported in March 1985, according to the report of the U.S. Atopy Center for Infectious Diseases, hepatitis B virus (HBV) was detected in 9 counties in Indiana from April 1 to December 30, Infection, and 2 of them died. Of the 9 patients, except one, they were treated by a dentist 3 to 5 months earlier and later identified as a HBsAg-positive dentist who had no conventional gloves when healed the patient. In addition to the 1 case of one of their family members who had evidence of HBV infection, none of these patients had a history of HBV risk and did not take hepatotoxic drugs. The dentist and seven patients had negative delta-factor antibody and antigen tests.