Hepatitis B Vaccine: Assessment of Immunologic Response, Coverage Rate, and Factors Influencing Seroreactivity.

Background: Hepatitis B infection and resulting health sequela is a worldwide health problem. Adults at increased risk of infection are recommended to receive hepatitis B vaccine for protection, followed by postvaccination titer testing to confirm immunity. The aim of this study is to assess coverage rate and immunologic response to hepatitis B vaccine and factors influencing seroreactivity.