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为了解青岛市不同职业人群的甲肝病毒(HAV)感染状况,于1994年5月至1995年6月分别对出国劳务输出人员、卖淫妇女、职业献血员、医务人员、性病
To understand the status of hepatitis A virus (HAV) infection among different occupational groups in Qingdao City, from May 1994 to June 1995, the number of overseas labor exporters, prostitutes, professional blood donors, medical staff, STDs