Prevalence of hepatitis B virus infection in chronic users of hepatotoxic drugs and alcoholic cirrhotic patients.

Anti-HBc prevalence in alcoholics, chronic hepatotoxic drugs users, exposed to both these factors, and not exposed to alcohol and drugs cirrhotic patients was compared. Anti-HBc prevalence was significantly higher both in alcoholics and in hepatotoxic drugs users cirrhotic patients, and no statistically significant difference was found between the prevalence of anti-HBc in these two groups. In male cirrhotic patients the risk of HBV infection was 4.4 times higher in chronic hepatotoxic drugs users, 4.7 times higher in alcoholics, and 6.9 times higher in patients exposed both to alcohol and drugs. These results support the hypothesis that also chronic consumption of hepatotoxic drugs may be associated with a greater prevalence of HBV infection.