Fig. 1From: Assessing the COVID-19 vaccination program during the Omicron variant (B.1.1.529) epidemic in early 2022, TokyoEpidemiology of COVID-19 in Tokyo during the sixth wave, 2022. A Number of confirmed SARS-CoV-2 infections from January to May 2022 by age group. Each color represents the number of confirmed cases in each age group. B Vaccination coverage stratified by age group and dose (one or three). The period and color of the age group are the same as in Fig. 1ABack to article page