Fig. 2From: The efficacy and effectiveness of COVID-19 vaccines around the world: a mini-review and meta-analysisThe overall Effectiveness of studied COVID-19 vaccines after the first doseThe overall Effectiveness of vaccines after the second dose was 91% (95% CI 0.88, 0.94), with a significant P-value (p-value < 0.05) (Fig. 3)Back to article page