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(a) Vaccine efficacy against various severe outcomes from randomized controlled trials of vaccines (Table 2). (b) Vaccine preventable disease incidence (VPDI) against various severe outcomes from randomized controlled trials of vaccines. Fig. 1a and b report data from the same nine trial sites with Fig. 1a in descending order of VE and Fig. 1b in descending order of VPDI. Green bars indicate >60% VE and red cross-hatched bars 50% or less VE.
