In 144 alcoholics--patients of alcoholic outpatient clinic anti-HAV antibodies were studied using the commercially available ELISA test. Anti-HCV antibodies were found in 86% of the alcoholics, and this prevalence was not higher than in the control group. No differences were found in the titre of antibodies against cytomegaly and herpes virus between the subjects with and without anti-HAV antibodies which suggests the specificity f the determined anti-HAV antibodies.