Observational study in Qatar: Pfizer–BioNTech Covid vaccine is 89.5% effective against B.1.1.7 variant and 75.0% effective against B.1.351 variant. Vaccine effectiveness against severe, critical, or fatal disease with any SARS-CoV-2 variant was very high, at 97.4%.
6 May, 2021 | 09:06h | UTC
Commentary on Twitter
?GET BOTH DOSES! Great variants & #COVID19 vaccine news—Pfizer/BioNTech vaccine had great efficacy of 89.5% vs #B117 ?? variant & 75% vs #B1351 ?? variant for infection—but only with 2 doses. The 1 dose efficacy was just ~29% vs #B117 & ~17% vs #B1351. ?https://t.co/SprUfggnmh pic.twitter.com/VDWHiLsQLL
— Eric Feigl-Ding (@DrEricDing) May 6, 2021