Troubling—the worst variant to date, the #DeltaVariant is now the new fastest growing variant in US. This is the so-called “Indian” variant #B16172 that is ravaging UK 🇬🇧 despite high vaccinations because it has immune evasion properties. Here is why it’s trouble—🧵. #COVID19 pic.twitter.com/nuPUOWoLa1

— Eric Feigl-Ding (@DrEricDing) June 8, 2021