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为了解泰安市既往职业献血员人群丙型肝炎病毒(ＨＣＶ)的感染状况和型别分布 ,以便针对性地研究制订防治对策 ,控制传播 ,我们于 1 996～ 1 999年对泰安市部分既往职业献血员聚集人群进行了调查研究。1 材料和方法1 1 调查对象 采用整群抽样的方法 ,选取泰安市 1 995年以前
In order to understand the status and type distribution of hepatitis C virus (HCV) among past professional blood donors in Tai’an City, in order to study and formulate prevention and control measures and control spread of the disease in a targeted manner, we studied some past occupations of Tai’an from 1996 to 1999 Blood donors gathered to investigate the population. 1 Materials and methods 1 1 surveyed using cluster sampling method, selected Tai’an City before 1995