Age-Specific Seroprevalence of HIV, Hepatitis B Virus, and Hepatitis C Virus Infection Among Injection Drug Users Admitted to Drug Treatment in 6 US Cities

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Abstract
Objectives. This study measured age-specific seroprevalence of HIV, hepatitis B virus, and hepatitis C virus (HCV) infection among injection drug users (IDUs) admitted to drug treatment programs in 6 US cities. Methods. Remnant sera collected from persons entering treatment with a history of illicit drug injection were tested for antibodies to HIV, hepatitis C (anti-HCV), and hepatitis B core antigen (anti-HBc). Results. Prevalence of anti-HBc and anti-HCV increased with age and reached 80% to 100% among older IDUs in all 6 cities. Although overall age-specific HIV prevalence was lower than anti-HCV or anti-HBc, this prevalence was greater in the Northeast than in the Midwest and West. Conclusions. The need continues for effective primary prevention programs among IDUs specifically targeting young persons who have recently started to inject drugs. (Am J Public Health. 2002;92:385–387)

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