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1987年4月,发现二名妇女乙型肝炎表面抗原(HBsAg)阳性.由于其中一例为急性乙肝,另一例无症状的糖尿病病人又有肝功能异常,故进行了调查研究。利用计算机贮存资料追查了这些病人以前的实验室检查结果,表明这二名妇女曾是几个月前同一妇产科病房的病人。检查了前几个月期间HBsAg 阳性病人一览表,又查出另一位无明显危险因素的妇女,但她曾于几个月前作过剖腹产术。获取了这三例病人的病历资料,无一有明显的乙肝感染因素,但全都由同一手术医生做过手术。检测这位手术医生
Two women were found positive for hepatitis B surface antigen (HBsAg) in April 1987. An investigation was conducted as one of the patients with acute hepatitis B and another asymptomatic diabetic patient had abnormal liver function. The use of computerized data to trace the previous laboratory tests of these patients showed that the two women were patients in the same obstetrics and gynecology ward a few months earlier. A list of HBsAg-positive patients in the previous months was examined and another woman identified as having no significant risk was identified, but she had had a caesarean section a few months earlier. Access to these three cases of patient data, none of the obvious factors of hepatitis B infection, but all done by the same surgeon surgery. Test the surgeon