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FIGURE 5-1 Hepatitis B services model. Abbreviations: HBV, hepatitis B virus; HBsAg, hepatitis B surface antigen; anti-HBs, antibody to hepatitis B surface antigen. are at increased risk for HBV infection. CDC recommends that all those populations be tested and given a first dose of vaccine at the time of testing. However, the committee believes that an acceptable alternative is hepatitis B vaccination without testing for all the populations except HIV-infected persons. This approach may facilitate increased vaccination rates. All persons found to have risk factors for HBV infection should receive counseling about prevention. Hepatitis C Risk-Factor Screening CDC has identified risk factors for people at risk for being infected with HCV or becoming infected with HCV (see Box 5-5). Risk-factor screening has been tested by using question-
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