⚠️41x DROP IN NEUTRALIZATION—first lab study of #Omicron neutralization is out from @sigallab. Huge drops in Pfizer vaccine’s neutralization of #Omicron variant—from ~1321 to just ~32. Even Pfizer+infection saw sharp drop. But I’m hopeful for boosters (stronger than infection).🧵 pic.twitter.com/XS1V63T6Pz

— Eric Feigl-Ding (@DrEricDing) December 7, 2021