What is the prevalence of hepatitis C (Hep C) in the US?

Updated: Apr 19, 2019
  • Author: Robert A Schwartz, MD, MPH; Chief Editor: Dirk M Elston, MD  more...
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Answer

The prevalence of hepatitis C virus (HCV) seropositivity in the United States was 3.9 million persons. [27] In persons who were seropositive, 65% were aged 30-49 years, and 74% of patients demonstrating positive results were positive for HCV RNA, meaning active viral replication continued to occur. An estimated 2.7 million persons have chronic hepatitis C infection. Genotype 1a occurs in 57% of patients; genotype 1b occurs in 17%. From 1989-1993, the occurrence of HCV decreased 80%, from 50 cases per 100,000 to approximately 28,000 new cases per year. Decreased transfusion-associated disease and a dramatic decrease in intravenous drug use account for this change.


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