Weekly rate ratios among children aged 5–17 comparing lowest COVID-19 vaccination coverage quartile states to highest coverage quartile states by outcome: December 13, 2020–April 30, 2022.

Vaccine coverage estimates for children aged 5–17 years during the first and last week of the Delta and Omicron periods of predominance in the US: (Delta: 9.21% as of the week of June 20^th, 2021, 22.57% the week of October 31, 2021); (Omicron: 29.19% the week of December 19, 2021, 40.03% the week of April 24, 2022). Full vaccination coverage ranges for bottom and top quartile states as of the week of April 24, 2022: Bottom quartile: 20.14%–28.46%, Top quartile: 47.24%–59.42%.