Booster Shots and Additional Doses for COVID-19 Vaccines What You …

Infectious Diseases

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Updated November 9, 2022

As of Oct. 12, 2022, the new COVID-19 booster recommendations for people ages 5 years and older is to receive 1 bivalent mRNA booster after completion of a monovalent primary series or previously received monovalent booster dose(s); these recommendations replace all prior booster recommendations for this age group.

The CDC recommends a bivalent (containing components of both the original strain of the SARS-CoV-2 virus and the omicron variant of the virus) COVID-19 booster for people ages 5 years and older. The bivalent vaccines, which offer better protection against COVID-19 caused by the omicron variant than the earlier, monovalent vaccines, have been authorized for use as a single booster dose administered at least two months after primary or booster vaccination. The monovalent COVID-19 vaccines will no longer be available for booster doses in patients over the age of 5. However, the monovalent vaccines will remain available for the primary vaccine series in all patients and for booster doses in patients younger than 5 years old.

Visit theCDCs COVID-19 vaccine and booster pagefor more details.

A COVID booster shot is an additional dose or doses of a vaccine given after the protection provided by the original shot(s) has begun to decrease over time. The booster helps people maintain strong protection from severe coronavirus disease.

After getting vaccinated for COVID-19, you might experience some temporary symptoms similar to those you might notice when you get a flu shot, such as a sore, swollen arm where you got the shot. You might run a fever and experience body aches, headaches and tiredness for a day or two. Chills, swollen lymph nodes can also occur.

These symptoms do not mean you are sick. They signal that your immune system is responding to the shots and building up protection against the coronavirus.

A COVID-19boosteris given when a person has completed their vaccine series, and protection against the virus has decreased over time. Depending on the original series you had, some details will vary. Please review theCDCs booster guidelinesfor detailsand talk to your health care provider if you are not sure if you meet these guidelines. Please note, if you receive the Moderna booster, you will receive half of the original Moderna dose.

Anadditional doseis administered to people with moderately to severely compromised immune systems. This additional dose is intended to improve immunocompromised peoples response to their initial vaccine series. Depending on the original series given, some details will vary. For more details, please review the CDCs information for moderately to severely immunocompromised people and talk to your health care provider if you are not sure if you meet these guidelines.

Get information and updates from Johns Hopkins Medicine.

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Booster Shots and Additional Doses for COVID-19 Vaccines What You ...