COVID-19

Pfizer and Moderna are mRNA vaccines, while Johnson and Johnson and Novavax are viral vector vaccines.

For information about these types of vaccines, click here.

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Pfizer and Moderna are recommended for people as young as 6 months old. Novavax is approved for ages 12+. Johnson and Johnson is approved for people over 18. 

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Primary series:

• The mRNA vaccines and Novavax require 2 doses, and Johnson and Johnson requires 1 dose. 

  • 3-8 weeks between doses for Pfizer​ and Novavax

  • 4-8 weeks between doses for Moderna

• For kids under 5:

  • The Pfizer vaccine requires a 3-dose series with 3-8 weeks between dose 1 and 2 and at least 8 weeks between dose 2 and 3. 

  • Moderna is a 2-dose series with at least 4-8 days between doses

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There are also booster doses:

• Children as young as 6 months are eligible to receive a bivalent COVID-19 booster.

  • Bivalent means that it protects against 2 different versions of SARS-CoV-2 – the original strain and omicron (BA.4 and BA.5)

  • People are eligible for this booster if it has been at least 2 months since their last dose

  • There is not a specific recommendation for how long to wait to get a booster after COVID-19 infection, but some experts say that you should wait 4-6 months after infection (or a previous vaccine dose) before getting a booster.