Most important new report today, and highly encouraging: Real world vaccine effectiveness (E) in >380,000 people in Qatar to B.1.1.7 (UK) and B.1.351 (South Africa) variants, *100% E vs severe illness both*👍 @NEJMhttps://t.co/JhP6zUt1LJ pic.twitter.com/Zkjk2ZpCo2

— Eric Topol (@EricTopol) May 5, 2021