Boosters (3rd shot)

Boosters (3rd shot) for some people who got Pfizer

Officially, it is recommended that people 65+ and people with underlying medical conditions get a third shot of the Pfizer vaccine if it has been 6 months since their first two shots.

Unofficially, the same has been recommended for workers on the front line. This has caused some confusion, even among the experts. The best thing to do if you are unsure is call your doctor and ask them if you need a third shot. See the CDC’s page on this topic.

Immunocompromised examples:

  • 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 two 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

Front line worker examples:

  • First responders (healthcare workers, firefighters, police, congregate care staff)
  • Education staff (teachers, support staff, daycare workers)
  • Food and agriculture workers
  • Manufacturing workers
  • Corrections workers
  • U.S. Postal Service workers
  • Public transit workers
  • Grocery store workers

Find a vaccine site by zip code (you can filter vaccines to show Pfizer availability):

updated 9/23/21

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