This document provides the recommended child and adolescent immunization schedule for ages 18 years and younger in the United States for 2023. It includes a table outlining the recommended vaccines by age from birth through 18 years, including COVID-19, influenza, measles, mumps, rubella and other routine childhood vaccines. It also provides catch-up schedules for children whose vaccinations have been delayed. The schedule is designed to help healthcare professionals determine which vaccines are recommended at each well-child visit.