📍NEW “BA2” SUB-VARIANT—@UKHSA has designated a #Omicron sub-lineage, known as BA.2, as a new “variant under investigation”. 53 in 🇬🇧 but 2,093 sequences of BA.2 recorded from 22 countries. Unclear yet—but “possibility it could be more transmissible.” 🧵 https://t.co/EPpktbuqzR— Eric Feigl-Ding (@DrEricDing) January 21, 2022