Rabbi Yisrael Meir Lau receives a COVID-19 coronavirus vaccine at the Ichilov Hospital in Tel Aviv, Israel, Sunday, December 20, 2020. Ariel Schalit/AP Photo Pfizer-BioNTech’s two-dose coronavirus vaccine was 94% effective at protecting against COVID-19 in a real-world study. In late-stage clinical trials before it was authorized, it was 95% […]