Booster and Additional Dose

Updated 9/26/2022

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COVID-19 Vaccine Booster Dose

The Centers for Disease Control and Prevention (CDC) and the Oregon Health Authority (OHA) recommend a booster dose of the COVID-19 vaccine for most people 5 years or older. A booster is an additional dose of a vaccine given after the full series has been completed to increase the effectiveness of the vaccine.

On September 2, 2022 OHA authorized the use of updated bivalent vaccines produced by Pfizer and Moderna as boosters in Oregon. Anyone 12 years or older, who completed their primary vaccination series or received their last monovalent booster (one strain) at least 2 months ago is eligible for this updated booster. Even if you’ve already received multiple boosters, and no matter what brand your primary series was.

If you received Pfizer for your primary series

It is recommended that everyone 5-11 years or older receive a Pfizer booster dose at least five (5) months after completing the primary vaccination series. Everyone age 12 and older who received a primary COVID-19 vaccine series is recommended to receive a single dose of an updated bivalent booster dose; persons 12-17 years of age must receive the bivalent Pfizer vaccine, and persons 18 and older may receive either the Pfizer or the Moderna bivalent vaccine.

If you received Moderna for your primary series

It is recommended that everyone 18 years or older receive a booster dose at least two (2) months after completing the primary vaccination series. Anyone 18 or older should receive an updated bivalent booster, but can choose either Pfizer or Moderna. Pfizer is currently the only authorized booster for youth under 18. 

The Moderna vaccine is not authorized to be used as a booster for youth under 18 years old.

If you received Novavax as your primary series

It is recommended that everyone 18 years or older receive a booster dose at least two (2) months after completing the primary vaccination series. This booster must be the updated bivalent Pfizer or Moderna vaccine.

Johnson & Johnson Vaccine Booster

It is recommended that everyone 18 years or older receive a booster dose at least two (2) months after their initial dose. This booster should be an updated bivalent booster, but you can choose either Pfizer or Moderna.

Choosing your COVID-19 booster dose

For those 18 years and over you may receive either brand of mRNA COVID-19 bivalent booster; Pfizer or Moderna, regardless of which brand you previously received. 


 

Additional Booster Dose

The CDC and the OHA have updated their recommendations to allow everyone 12 years or older to receive a booster dose of the updated Pfizer or Moderna vaccine two months after completing their primary series or receiving a monovalent booster (one strain). 

This updated booster is recommended even if you’ve already received one (or more) booster doses, and no matter what brand your other doses of vaccine were.


 

Additional Dose for Immunocompromised Individuals

A fourth dose of Pfizer/Comirnaty or Moderna vaccine is recommended for individuals 5 years old or older who have moderately to severely compromised immune systems. Individuals should talk to their healthcare provider about their medical condition and whether getting an additional dose is appropriate for them. Learn more about this recommendation here. 

For those who received the Johnson & Johnson vaccine, a second primary dose is recommended at least 28 days after the first dose. This additional dose should be a Pfizer or Moderna vaccine.

For more information about the difference between a booster shot and a third dose, please see this FAQ from the OHA.

Booster Dose for Immunocompromised Individuals

The CDC recommends most people ages 5 to 11 years old, including people who are immunocompromised and received a third dose of Pfizer or Moderna, get a booster dose three months or more after their third dose. Anyone 12 and older, including those who are immunocompromised and received a third dose of Pfizer or Moderna, are recommended to get an updated booster dose two months or more after their third primary dose or their first booster. Youth 5-17 years old are only eligible to receive the Pfizer vaccine. Learn more at https://govstatus.egov.com/or-oha-booster-covid-19-vaccine.

For those who received the Johnson & Johnson vaccine, an updated booster dose of either a Pfizer or Moderna vaccine is recommended two months after the additional primary dose. If you have already received a booster dose of Johnson & Johnson, it is instead recommended you receive an additional booster at least two months after your last dose.