Results of a hepatitis C general transfusion lookback program for patients who received blood products before July 1992.

Background: The Centers for Disease Control and Prevention recommend hepatitis C virus (HCV) antibody (anti-HCV) screening for persons who received blood products before July 1992. A general transfusion lookback program was implemented to identify, counsel, and screen persons who received transfusions at the Alaska Native Medical Center between January 1980 and July 1992.

Study Design And Methods: Hard-copy transfusion records data were entered, and available databases were queried to identify deceased patients and the mailing address of those living.

Hepatitis A vaccine: immunogenicity following administration of a delayed immunization schedule in infants, children and adults.

Current immunization schedules for hepatitis A vaccine specify administration of a booster within 6-12 or 6-18 months of the primary dose. However, there may be circumstances that disrupt this schedule and the efficacy of administering a booster beyond the recommended time is a practical concern for healthcare providers. In this study, a booster was administered to 268 participants (137: <18 years old), an average of 27 months (range 20-31) after the primary dose.