Fig. 1.

Effectiveness of the ongoing FHI vaccination schedule in 2021. Across cities the effectiveness of the vaccination by the end of (A) mid-July and (B) mid-September are estimated by the reduction of infections as compared with the baseline scenario without the vaccination. The effectiveness of age-descending strategy, designated by the FHI (yellow) is compared with the alternative, sociability-descending strategy (green). Cities are arranged in the descending order of the proportion of the elderly (over 75+ yr). Vaccine efficacy varies in 50%–90%. The median estimates and 95%CI are shown by colored bars and vertical lines, respectively.