My patient had the first dose of the 3-dose primary series of Pfizer-BioNTech COVID-19 vaccine at age 4 years and turned 5 before dose two. What should she get now?

CDC states that a person who moves to an older age group between vaccine doses should receive the vaccine product and dosage for the older age group for all subsequent doses.

Children who transition from age 4 years to age 5 years during the initial vaccination series should receive 1 dose of the 2024–2025 vaccine from the same manufacturer at the dosage authorized for children age 5–11 years on or after turning age 5 years.