COVID-19 mRNA Vaccine Safety Among Children Aged 6 Months–5 Years — United States, June 18, 2022–August 21, 2022

The Pfizer-BioNTech COVID-19 vaccine for use in children aged 6 months-4 years was administered as 3 doses (3 g 0.2 mL each), at intervals of 3 weeks between doses 1 and 2 and 8 weeks between doses 2 and 3; the Moderna COVID-19 vaccine for use in children aged 6 months-5 years was administered as 2 doses (25 g 0.25 mL each), 4 weeks apart. Data for Moderna COVID-19 doses administered to children aged 5 years were unavailable.