Compared with the pre-vaccination period of Nov. 29 to Dec. 12, 2020, COVID-19 incidence during April 18 to May 1, 2021, was 69% lower among adults overall, and 79%, 71% and 66% lower among persons aged 65 and over, 50-64 and 18-49, respectively, according to a report released by the Center for Disease Control and Prevention.