In the article, “Hepatitis C: Diagnosis and Treatment,” (June 1, 2010, page 1351), active alcohol or substance abuse was incorrectly listed as a contraindication to treatment for chronic hepatitis C virus infection in the first full paragraph on page 1354 and in Table 5 on page 1354. Based on the cited source, patients with active alcohol or illicit drug use can still receive individualized treatment for chronic hepatitis C virus infection if they are willing to participate in a substance abuse program (such as a methadone maintenance program) or alcohol support program. The article has been corrected online.