Most people don’t need a fourth shot yet. Researchers from Harvard Health, Johns Hopkins, Mayo Clinic, and more recommend getting your initial vaccination round (either one shot of Johnson & Johnson or two shots of Pfizer or Moderna) PLUS one booster shot.

This level of vaccination raises your immune response enough to help protect you from severe illness, hospitalization, or worse.

However, if you are immunocompromised and your doctor recommends it, a fourth shot may be worth considering.

Those eligible for a fourth shot are those:

  • 50 or older
  • 12 or older AND immunocompromised
  • recipients of either the Johnson & Johnson vaccine or booster

Source:
https://www.cdc.gov/media/releases/2022/s0328-covid-19-boosters.html (CDC)
https://www.health.harvard.edu/covid-19-vaccines and https://www.health.harvard.edu/diseases-and-conditions/if-you-are-at-higher-risk (Harvard Health)
https://www.hopkinsmedicine.org/health/conditions-and-diseases/coronavirus/booster-shots-and-third-doses-for-covid19-vaccines-what-you-need-to-know (Johns Hopkins)
https://www.mayoclinic.org/coronavirus-covid-19/vaccine (Mayo Clinic)
https://www.verywellhealth.com/fourth-covid-shot-5218686 (Verywell Health)

Updated 03/30/2022