EARLY RELEASE: COVID-19 Incidence and Death Rates Among Unvaccinated and Fully Vaccinated Adults with and Without Booster Doses During Periods of Delta and Omicron Variant Emergence - 25 U.S. Jurisdictions, April 4-December 25, 2021

Published on January 21, 2022

This report describes COVID-19 incidence rate ratios for unvaccinated versus fully vaccinated persons with and without booster vaccine doses during the emergence of the Omicron variant.