Percentage reduction in projected cumulative COVID-19 mortality on April 10, 2021, in relation to the cumulative mortality in the absence of vaccination (511, 100 COVID-19 deaths on April 10, 2021), for the three vaccines considered in this study: AstraZeneca vaccine (efficacy εv = 0.7); Pfizer and/or Moderna vaccine (efficacy εv = 0.95), and various levels of increases in baseline social-distancing compliance attained on October 12, 2020 (cs) and vaccination rate (ξv). SD, social-distancing compliance.