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Coronavirus disease 2019 (COVID-19) vaccination rate (reported number of vaccine doses administered/100 population) and the reported case–fatality ratio (CFR) in different countries on 31 December 2022. Darker colour indicates higher vaccination rate or higher case–fatality ratio. An inverse correlation was found between COVID-19 vaccination rate and rCFR (r=-0.363, P<0.001) and excess mortality (r=-0.321, P<0.001).
