The updated, bivalent formula for COVID-19 booster doses is not authorized as a primary series vaccination. Pfizer and Moderna have not submitted requests for authorization to use their updated boosters as a complete primary series vaccination.
The best way to protect yourself from getting severely ill from COVID-19 is to get vaccinated. The CDC recommends that unvaccinated people get their primary series (the initial two doses of either Pfizer, Moderna or Novavax), and then wait at least two months to get the updated Pfizer or Moderna booster dose.The monovalent Novavax booster and the Johnson & Johnson primary and booster vaccinations are authorized for people 18 and older in limited situations.