An RNA Virus, named hepatitis C Virus (HCV), has been proposed as an etiological agent for non-A, non-B (NANB) hepatitis, and antibodies directed to HCV (anti-HCV) are detectable by an enzyme-immuno assay (EIA), and commercial first and second generation assay kits are easily available. And so we planned this study in order to assess the causative role of HCV to the developmnt of the various liver diseases and to compare the prevalence of anti-HCV in Chonbuck province with tkat of the other areas. (continue...)