COVID-19 Bivalent Vaccine Boosters – FDA.gov

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Updated vaccine boosters authorized for use as a single dose
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December 8, 2022: FDA authorizes updated (bivalent) COVID-19 vaccines for children down to 6 months of age. Read press release.
The virus that causes COVID-19 changes over time. Keep your protection against COVID-19 up to date by getting a bivalent COVID-19 vaccine booster dose.
The bivalent COVID-19 vaccines include a component of the original virus strain to provide broad protection against COVID-19 and a component of the omicron variant to provide better protection against COVID-19 caused by the omicron variant. These are called bivalent COVID-19 vaccines because they contain these two components. A bivalent COVID-19 vaccine may also be referred to as “updated” COVID-19 vaccine booster dose.
COVID-19 vaccines can help protect against severe illness, hospitalization and death from COVID-19. As the virus changes and your immunity naturally decreases over time, you may lose some of that protection.
Search in your zip code to find a location where a bivalent COVID-19 vaccine booster dose is available near you. 
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The FDA authorized bivalent formulations of the Moderna and Pfizer-BioNTech COVID-19 vaccines for use as a single booster dose.
The Moderna COVID-19 Vaccine, Bivalent is authorized for use as single booster dose in children 6 months through 5 years  of age at least two months after completion of a primary series with the monovalent Moderna COVID-19 Vaccine.  It is also authorized for use as a single booster dose in individuals 6 years of age and older at least two months after completion of either primary vaccination with any authorized or approved COVID-19 vaccine, or receipt of the most recent booster dose with any authorized or approved monovalent COVID-19 vaccine.
The Pfizer-BioNTech COVID-19 Vaccine, Bivalent is authorized for use as a single booster dose in individuals 5 years of age and older at least two months after completion of either primary vaccination with any authorized or approved COVID-19 vaccine or receipt of the most recent booster dose with any authorized or approved monovalent COVID-19 vaccine.
Eligibility for a booster depends on:
Read more about booster eligibility in our frequently asked questions.
A single booster dose with an updated bivalent COVID-19 vaccine provides broad protection against COVID-19 and is expected to provide better protection against COVID-19 caused by the currently circulating Omicron variant.

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