WORRISOME ON *E484* MUTATION—New study from blood of 44 people infected in 1st wave in S Africa🇿🇦 was tested against new #SARSCoV2 variant #B1135 (501Y.V2)—found antibodies from **21 of 44 did not recognize** the new B1125 variant—Almost half! #COVID19 🧵https://t.co/QcjCPTw4ot pic.twitter.com/ks1nNsLrhp

— Eric Feigl-Ding (@DrEricDing) January 18, 2021