PolitiFact @PolitiFact
The COVID-19 vaccines are highly effective. The Pfizer vaccine’s 95% efficacy, for example, means that the people who received the vaccine in clinical trials had a 95% lower risk of becoming infected than those who received a placebo. https://t.co/hO89dx1Rm7 https://t.co/20zZszYTyC — PolitiTweet.org