Among US adults, adherence with and completion of recommended hepatitis multidose vaccine schedules are low, with the majority of adults initiating vaccination potentially missing the full protective benefit of all doses. This according to a retrospective database study of administrative claims from 2008 to 2015. Completion of 2 (Hep A) and 3 doses (HepB and HepA-HepB), and adherence to the 2- and 3-dose recommended schedules were measured among individuals aged ≥19 years at first dose. Researchers found:
- Only 27% of adults initiating HepA vaccine were adherent to the 2-dose schedule.
- Approximately one-third of adults who initiated the HepB or HepA-HepB series completed all 3 doses in 2 years.