Fig. 5.

Projected percentage incremental hospitalisations averted over a 2-year period by annual (brown bars) and biannual (yellow bars) COVID-19 vaccine boosters for those eligible under varying seasonality, emerging variant severity, variant timing, vaccine infection-blocking efficacy, emerging variant immune-evading capacity, and emerging variant infectivity from best estimate values as listed in Table 1. See Figures S15 and S17 in the Electronic Supplementary Material for details