While mixing doses during a primary series is not recommended at this time, you may choose to receive a different vaccine for your booster shot if you have completed a primary series and are eligible for a booster.  For booster vaccination, CDC recommends eligible people age 5 and older receive an age-appropriate, updated Pfizer or Moderna vaccine that offers better protection against variants. The monovalent Novavax booster and the Johnson & Johnson primary and booster vaccinations are authorized for people 18 and older in limited situations.

Some people may have a preference for the vaccine type that they originally received, and others may prefer to get a different booster. CDC’s recommendations allow for this type of mix and match dosing for booster shots.

See additional recommendations for people who are moderately to severely immunocompromised. The recommended vaccination schedule from the Centers for Disease Control and Prevention is available here.