A dental assistant completed a 3-dose hepatitis B vaccine series. One month later, her anti-HBs level is 85 mIU/mL. What is the most appropriate next step?

  • Correct answer

    No further vaccine doses or routine antibody testing are needed

  • Give a booster dose every 5 years

  • Repeat the anti-HBs test every year

  • Repeat the full 3-dose series

This question is one of 15 in AFK practice: Prevention, infection control and ethics. Test yourself on all of them.

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Explanations

  • An anti-HBs level of 10 mIU/mL or more after a complete series shows a protective response, and immunocompetent responders keep long-term protection without boosters or periodic testing. Revaccination is only for those whose level is below 10 mIU/mL.

    Source: CDC, Guidance for Evaluating Health-Care Personnel for Hepatitis B Virus Protection (MMWR 2013) — oneguy

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