COVID-19 Vaccine Booster Guide

Eligibility information about booster shots of the COVID-19 vaccine

Overview

CDC recommends that people ages 12 years and older receive one updated (bivalent) booster if it has been at least 2 months since their last COVID-19 vaccine dose, whether that was:

  • Their final primary series dose, or
  • An original (monovalent) booster

People who have had more than one original (monovalent) booster are also recommended to get an updated (bivalent) booster.

View COVID-19 Vaccine Clinics

Learn more on the State of Missouri Vaccine Navigator website or
call (877) 435-8411

For COVID-19 related questions, call (314) 657-1499 or email health@stlouis-mo.gov.

Updated (Bivalent) Boosters

The updated (bivalent) boosters are called “bivalent” because they protect against both the original virus that causes COVID-19 and the Omicron variant BA.4 and BA.5.

Previous boosters are called “monovalent” because they were designed to protect against the original virus that causes COVID-19. They also provide some protection against Omicron, but not as much as the updated (bivalent) boosters.

When Are You Up to Date?

You are up to date with your COVID-19 vaccines if you have completed a COVID-19 vaccine primary series and received the most recent booster dose recommended for you by CDC.

COVID-19 vaccine recommendations are based on three things:

  1. Your age
  2. The vaccine you first received, and
  3. The length of time since your last dose

People who are moderately or severely immunocompromised have different recommendations for COVID-19 vaccines.

You are still up to date if you receive all COVID-19 vaccine doses recommended for you and then become ill with COVID-19. You do not need to be immediately revaccinated or receive an additional booster.

Getting Vaccines If You Had or Currently Have COVID-19

If you recently had COVID-19, you may consider delaying your next vaccine dose (whether a primary dose or booster) by 3 months from when your symptoms started or, if you had no symptoms, when you first received a positive test.

Reinfection is less likely in the weeks to months after infection. However, certain factors, such as personal risk of severe disease, or risk of disease in a loved one or close contact, local COVID-19 Community Level, and the most common COVID-19 variant currently causing illness, could be reasons to get a vaccine sooner rather than later.

Was this page helpful?      



Comments are helpful!
500 character limit

Feedback is anonymous.

16 comments from people like you have helped us improve this page. Keep the feedback coming!