WASHINGTON — By now we've all heard that the Pfizer COVID-19 vaccine has an efficacy rate of 95%, Moderna of 94%, and Johnson & Johnson about 66%; what you may not have known is that rate's ...

Pfizer and Moderna using relative risk reduction in order to claim “95% effective” instead of using absolute risk reduction where they’d only be able to claim “0.7%” and “0.6% ...

Pfizer and Moderna using relative risk reduction in order to claim “95% effective” instead of using absolute risk reduction where they’d only be able to claim “0.7%” and “0.6%” effectiveness, ...

Pfizer and Moderna using relative risk reduction in order to claim “95% effective” instead of using absolute risk reduction where they’d only be able to claim “0.7%” and “0.6% ...