Updated COVID-19 vaccines restore protection against severe COVID-19 that may have decreased over time. The COVID-19 formula will be updated seasonally to combat circulating variants found in the population.
As of September 12, 2023, the 2023–2024 updated Pfizer-BioNTech and Moderna COVID-19 vaccines were recommended by CDC for use in the United States.
There is no preferential recommendation for the use of any one COVID-19 vaccine over another when more than one licensed or authorized, recommended, and the age-appropriate vaccine is available.
Unvaccinated individuals 6 months through 4 years of age?are eligible to receive three doses of the updated authorized Pfizer-BioNTech COVID-19 Vaccine or two doses of the updated authorized Moderna COVID-19 Vaccine.
Individuals 6 months through 4 years of age who have previously been vaccinated?against COVID-19 are eligible to receive one or two doses of an updated mRNA COVID-19 vaccine (timing and number of doses to administer depends on the previous COVID-19 vaccine received).?
Individuals 5 years of age and older regardless of previous vaccination?are eligible to receive a single dose of an updated mRNA COVID-19 vaccine at least 2 months since the last dose of any COVID-19 vaccine.?
COVID-19 vaccines and boosters can be given simultaneously with other vaccines.