Screening for Chronic Hepatitis B and C Virus Infections in an Urban Sexually Transmitted Disease Clinic

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Abstract
Background and Objectives Clients attending sexually transmitted disease (STD) clinics are at risk for multiple infections (e.g., STDs, HIV, and infectious viral hepatitis). Risk assessment and serosurveys can document the need for hepatitis screening and vaccination services. Goal To determine hepatitis C and B virus seroprevalence, identify predictive risk factors, and provide a rationale for integrating hepatitis services in an STD clinic. Methods During various periods in 1998, consecutive clients completed a self-administered risk assessment and were offered screening for markers of hepatitis B virus (HBV) and hepatitis C virus (HCV) infection (HBV core antibody and anti-HCV [enzyme-linked immunosorbent assay 3.0, confirmed by recombinant immunoblot assay 2.0]). Results Sixteen percent of 300 clients tested for an anti-HBV core were positive, with injecting-drug users (IDUs) and men who have sex with men (MSM) having higher prevalences (50% and 37%, respectively). Of 615 clients tested for anti-HCV, 21 (3.4%) were positive. Injecting-drug users (n = 34) had a 38% anti-HCV prevalence compared with 1.1% for non-IDUs. Of 66 non-IDU MSM tested, none was HCV infected. IDUs had a high prevalence of past STDs (> 50%) and unsafe sexual behavior. Conclusions Injecting drug users and MSM are at high risk for STDs, HIV, and hepatitis infections and could benefit from a “one-stop” STD clinic that included hepatitis prevention services.