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Prevalence data for hepatitis B and C and an evaluation of a guideline based screening in the primary care setting are not yet available. We therefore implemented a hepatitis B surface antigen (HBsAg) and anti-hepatitis C virus (HCV) screening and developed guideline based screening strategies.

HBsAg, anti-HCV, and alanine aminotransferase (ALT) were included in a routine check-up together with a questionnaire covering 16 guideline adapted risk scenarios. Significant risk factors were identified by stepwise logistic regression.

51 private practices screened 21,008 patients. The HBsAg, anti-HCV, and HCV-RNA prevalence was 0.52%, 0.95%, and 0.43%, respectively. Infections were previously unknown in 85% and 65% of HBsAg and anti-HCV positive individuals, respectively.

Sexual risk factors were under-reported, while the following scenarios were significantly …