COVID-19-Vaccine-Boosters COVID-19 Vaccine Booster Doses

​This information is no longer accurate and is for historical purposes only. For the latest on COVID-19 Vaccines, please visit the Get the Facts on Vaccines page.​

COVID-19 Vaccine Booster Doses

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​​What:

The FDA has authorized the bivalent vaccine for Moderna and Pfizer for those 6 months and older. The previous vaccines were monovalent and targeted the original strain. The updated vaccines are bivalent and target both the original strain and the Omicron strains that have been causing more recent cases. Please see below for a brief description of who is eligible. For more details, including special situations for those who are immunocompromised, please see​​ the COVID-19 Vaccine Eligibility Chart. For more information on Booster and Additional Doses, see Related Materials at the top of the ​​page. ​

Eligibility:

Pfizer-BioNTech (Pfizer)

6 months through 4 years:

  • ​​​Regardless of Immune Response:
    • If unvaccinated, should receive three doses of bivalent vaccine.
    • If received one or more monovalent doses in a primary series, should receive one or two doses of bivalent vaccine, as directed by your doctor.
    • If completed the initial series, should receive a Bivalent Booster dose at least two months after the last monovalent dose.

      5 years

      • Regular Immunity:
        • Should receive an Updated Bivalent Booster dose of Pfizer at least two months after completing their primary series or after their last monovalent booster dose.
      • Compromised Immunity:
        • Should receive an additional monovalent dose of Pfizer at least four weeks after receiving the second dose in their primary series.
        • Should receive an Updated Bivalent Booster dose of Pfizer at least two months after completing their primary series or after their last monovalent booster dose.

      5 through 64 years

      • Regular Immunity:
        • If unvaccinated, should receive one dose of bivalent vaccine.
        • If received one or more monovalent doses in a primary series, should receive a single  Bivalent Booster dose  at least two months after the last monovalent dose.
        • If completed the initial series, should receive a Bivalent Booster dose at least two months after the last monovalent dose. Eligible for only one bivalent vaccine dose.
      • Compromised Immunity:
        • If unvaccinated, should receive one dose of bivalent vaccine.
        • If received one or more monovalent doses in a primary series, should receive one to two doses of bivalent vaccine at least two months after the last bivalent dose, as directed by your doctor.
        • If completed the initial series, should receive a Bivalent Booster dose at least two months after the last monovalent dose.
        • If received a bivalent booster dose, may receive one or more additional doses of bivalent vaccine at least two months after the last bivalent dose, as directed by your doctor.

      Pfizer-BioNTech or Mo​derna

      65 ye​ars+​

      • Regular Immunity:
        • If unvaccinated, should receive one dose of bivalent vaccine.
        • If received one or more monovalent doses in a primary series, should receive a  Bivalent Booster dose  at least two months after the last monovalent dose.
        • If completed the initial series, should receive a Bivalent Booster dose at least two months after the last monovalent dose. May receive another bivalent booster dose four months after the last bivalent dose.
      • Compromised Immunity:
        • If unvaccinated, should receive one dose of bivalent vaccine.
        • If received one or more monovalent doses in a primary series, should receive one or more additional doses of bivalent vaccine at least two months after the last bivalent dose, as directed by your doctor.
        • If completed the initial series, should receive a Bivalent Booster dose at least two months after the last monovalent dose.
        • If received a bivalent booster dose, may receive a Bivalent Booster dose at least two months after the last bivalent dose, as directed by your doctor.

      Moderna 

      6 months through 5 years

      • Regardless of Immune Response:
        • If unvaccinated, should receive two doses of bivalent vaccine.
        • If received one or more monovalent doses in a primary series, should receive one or two doses of bivalent vaccine, as directed by your doctor.
        • If completed the initial series, should receive a Bivalent Booster dose at least two months after the last monovalent dose.

      6 through 64 years 

      • Regular Immunity:
        • ​If unvaccinated, should receive one dose of bivalent vaccine.
        • If received one or more monovalent doses in a primary series, should receive a single Bivalent Booster dose at least two months after the last monovalent dose.
        • If completed the initial series, should receive a Bivalent Booster dose at least two months after the last monovalent dose. Eligible for only one bivalent vaccine dose.
      • Compromised Immunity:
        • If unvaccinated, should receive one dose of bivalent vaccine.
        • If received one or more monovalent doses in a primary series, should receive one to two doses of bivalent vaccine at least two months after the last bivalent dose, as directed by your doctor.
        • If completed the initial series, should receive a Bivalent Booster dose at least two months after the last monovalent dose.
        • If received a bivalent booster dose, may receive one or more additional doses of bivalent vaccine at least two months after the last bivalent dose, as directed by your doctor.

      ​​​​Novavax COVID-19 Vaccine, Adjuvanted (Novavax)

      12 years+

      • Regardless of Immune Response:
        • ​​​Should receive a  single Bivalent Booster dose (either with Pfizer or Moderna) at least two months after  their last monovalent dose. Eligible for only one bivalent vaccine dose.

      ​​​​​18 y​​ears+

      • Regardless of Immune Response:
        • Should receive a  single Bivalent Booster dose (either with Pfizer or Moderna) at least two months after  their last monovalent dose. Eligible for only one bivalent vaccine dose.
        • In some limited situations, may receive the Novavax booster dose at least six months after completion of their primary series. Only for people for whom an mRNA Updated Booster is not accessible or clinically appropriate, or who would otherwise not receive a booster dose. 

      Johnson & Johnson (J&J)

      18 years+

      • Regular Immunity:
        • Should receive a single Bivalent Booster dose (either with Pfizer or Moderna) at least two months after  their last monovalent dose. Eligible for only one bivalent vaccine dose.​​

      • Compromised Immunity:
        • ​​​May receive one or more additional doses of an mRNA bivalent vaccine at least two months after the last monovalent dose, as directed by your doctor.
      ​​​​Where:
      Booster doses are available in many places, including healthcare providers, clinics and local pharmacies. Californians can visit the My Turn webpage (MyTurn.ca.gov) or call 833-422-4255, or visit Vaccines.gov to make an appointment or find a walk-in vaccine clinic near them.​







      Originally published on March 2, 2022