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Fig. 2 | Annals of Clinical Microbiology and Antimicrobials

Fig. 2

From: COVID-19 vaccination efficacy in numbers including SARS-CoV-2 variants and age comparison: a meta-analysis of randomized clinical trials

Fig. 2

The efficacy of COVID-19 vaccines for preventing symptomatic COVID-19. *Studies in adolescents; **study in adolescents and adults; $first dose was low, while second dose was standard, the United Kingdom; $$both doses were standard, the United Kingdom; $$$both doses were standard, Brazil; #observation at least 14 days after vaccination; ##observation at least 28 days after vaccination

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