Updated COVID-19 vaccine boosters targeting omicron now available

Following the Centers for Disease Control and Prevention (CDC) endorsement, updated COVID-19 vaccine boosters are now available from Pfizer-BioNTech for people ages 12 years and older, and from Moderna for people ages 18 years and older. The bivalent formulas combat both the original COVID strain and the two most prevalent omicron subvariants, BA.4 and BA.5.

BJC HealthCare started providing the updated Pfizer booster for ages 12 and older this week. You can make an appointment online. Going forward:

  • The original monovalent formula is no longer authorized as a booster for ages 12 and older and will not be given as boosters in BJC clinics.
  • The original monovalent vaccines are still authorized for the primary vaccine series and boosters for children ages 5-11.
  • Children under age 5 are not yet eligible for boosters.

The CDC recommends that people wait at least two months since their last vaccine dose or booster to receive an updated booster shot. Adults ages 18 and over may receive either the Pfizer or Moderna vaccine booster regardless of which product they received for their primary series and/or prior booster dose.

Boosters are widely available at clinics, pharmacies and other health care providers. To find locations or a Moderna vaccine site, visit or You can also text your ZIP code to 438829 or call 1-800-232-0233 to find locations.

WashU Med strongly encourages all those who are eligible to receive booster doses to increase protection against COVID-19 infection and complications.