Latest information on operational modifications for fall 2021 Roadrunner Roadmap

About Boosters and Third Doses

"Booster Shot" vs. "Third Dose": What's the Difference?

  • A booster shot is for individuals whose immune response to COVID-19 might have weakened over time.
  • A third dose, alternately called an additional dose, is for individuals who might not have built a strong enough level of immunity from a 2-dose vaccine series due to being moderately to severely immunocompromised.

Who Is Eligible?

Please note that the eligibility information below reflects CDC guidelines as of 11/22/2021.

Booster Shot Eligibility

Vaccine Manufacturer When to Get It Who Is Eligible
Pfizer-BioNTech,
Moderna
At least six (6) months after receiving the second dose of the initial two-dose vaccine series.
  • May receive booster:
    • Individuals 18 years and older
  • Should receive booster:
    • Individuals ages 50+
    • Individuals ages 18+ who live in long-term care settings
Johnson & Johnson At least two (2) months after receiving the initial, single-dose Johnson & Johnson vaccine.
  • Should receive booster:
    • Individuals 18 years and older

 (Source)

Additional Information About Boosters

In general, the same vaccine product that was used for the primary series should be used for the booster. If that is not available or another product is preferred, boosting with a single dose of any of the other FDA-authorized COVID-19 vaccine boosters is acceptable.

Switching vaccine products may be considered for booster doses only. Both doses of the primary vaccine series, and the 3rd dose/additional dose when applicable for moderately-severely immunocompromised people who received 2 doses of an mRNA vaccine, should use the same product.

 

Third Dose Eligibility

Vaccine Manufacturer When to Get It Who Is Eligible
Pfizer-BioNTech,
Moderna
At least 28 days after receiving the second dose of the initial two-dose vaccine series.
  • Individuals who are moderately to severely immunocompromised, which includes those who have:
    • Been receiving active cancer treatment for tumors or cancers of the blood
    • Received an organ transplant and are taking medicine to suppress the immune system
    • Received a stem cell transplant within the last 2 years or are taking medicine to suppress the immune system
    • Moderate or severe primary immunodeficiency (such as DiGeorge syndrome, Wiskott-Aldrich syndrome)
    • Advanced or untreated HIV infection
    • Active treatment with high-dose corticosteroids or other drugs that may suppress your immune response

 (Source)