Objective The study was designed to investigate whether there existed provirus HIV DNA in the liver tissues of intravenous drug users ( IVDU) with seronegative results of anti HIV test. 目的了解血清抗-HIV阴性的静脉药瘾者肝组织是否存在前病毒HIVDNA。
Objective To assess the extent of HCV infection among intravenous drug users ( IVDU) and the relevant factors. 目的了解静脉药瘾者丙型肝炎病毒(HCV)感染状况及其影响因素。