Figure 1.

Effectiveness on hospitalizations of vaccination strategies varying in the allocation of 200,000 daily doses between primary vaccination and booster shots, over the period from 1 September 2021 to 1 March 2022, compared to a baseline scenario in which all vaccination is stopped on 1 September 2021. (A,C,E) Vaccine efficacy decreased only for people aged 65 years and older. (B,D,F) Vaccine efficacy decreased for all age groups. (A,B) Daily new hospitalizations, (C,D) proportion of hospitalizations avoided, (E,F) proportion of hospitalizations avoided by age group. A prioritization strategy of (150 k/50 k) means 150 k daily doses for primary vaccination and 50 k daily booster doses until 90% coverage of one target population is reached, then all 200 k daily doses are allocated to the other target population.