highly significantp = 0.001
The receipt of 3 doses of the BNT 162b2 mRNA vaccine was associated with a highly significant 96% reduction in COVID-19 infection (aHR 0.04, 95% CI 0.01-0.27, p = 0.001), a 91% reduction in symptomatic COVID-19 (aHR 0.01-0.71, p = 0.02), a 100% reduction in moderate, severe or critical COVID-19 (aHR 0.00, 95% CI 0.00-0.04, p < 0.001), and a 100% reduction in severe or critical COVID-19 (aHR 0.0, 95% CI 0.00-0.02, p < 0.001) compared to participants who received 2 doses ( Table 4 ).