Hepatitis B vaccine newborn indication

Hepatitis B can pass from a pregnant person to a baby during delivery, and exposure can also occur in the household or healthcare setting. Newborn protection is therefore considered promptly when the mother has hepatitis B, when her test result is not yet known, or when a clinician identifies another exposure concern. The vaccine trains the immune system without containing live hepatitis B virus. It does not treat an infection that is already present.

The birth dose is part of a planned vaccination course. The exact schedule depends on the baby’s exposure risk, test results and local clinical guidance. A baby with a mother who has hepatitis B may need additional protective medicine as well as vaccination, so the maternity and newborn teams should coordinate care.

Tell the maternity team about any hepatitis B diagnosis, testing during pregnancy, or possible household exposure. Keep the baby’s vaccination record and confirm the date of the next dose before leaving the birth facility. If a dose was delayed, contact the child’s clinician rather than restarting a course without advice.

Learn more about [Hepatitis B Vaccination](/treatments/preventive-care-and-vaccination/hepatitis-b-vaccination/) and the infection itself at [Hepatitis B](/conditions/hepatitis-b/). Vaccination does not remove the need for follow-up tests when a baby had a recognised exposure.

Contact the newborn team promptly if the baby has missed a recommended birth dose, if a maternal hepatitis B result changes, or if there was an exposure that has not been discussed. Seek urgent medical help for a baby who is difficult to wake, struggling to breathe, feeding poorly with repeated vomiting, or becoming unusually pale or yellow. These signs have several possible causes and need assessment rather than a home diagnosis.

Ask which birth-dose plan applies, whether the mother’s hepatitis B test result changes the baby’s care, when follow-up doses or tests are due, and where the records will be kept. If the baby later develops concerning symptoms, ask whether a [Liver Function Test](/treatments/diagnostics-and-screening/liver-function-test/) is appropriate; do not arrange testing without clinical guidance.