Children should receive the U.S. FDA recommended COVID-19 vaccine dosage for their age group, even if they change age groups between doses. If a person moves from a younger age group to an older age group during the primary series or between the primary series and the booster dose, they should receive the vaccine product and dosage for the older age group for all subsequent doses.
Please consult with your child’s primary care provider for more information. Additional information about vaccination for children who transition from a younger to older age group is available for the Pfizer and Moderna vaccines in the corresponding hyperlinks.