How Pfizer Lies with Statistics: A Second Look at Pfizer’s Efficacy Claim

The announcement came on November 18, 2020. Having only just begun studying the effects of its novel mRNA vaccine eight months earlier, Pfizer—with great fanfare—announced that its drug was “95% effective against COVID-19″. In support of its claim, Pfizer submitted an article to the New England Journal of Medicine (NEJM) which summarized the data collected …