RT @mvankerkhove: . #Omicron continues to evolve with >300 sublineages that we are tracking. Here is latest info on XBB and BQ.1 (in brief) ⬇️. Our concern is the increased growth rate and risk of re-infection. So far we do not detect changes in severity, but available data is limited. 1/2

🐦🔗: https://nitter.eu/ECDC_EU/status/1585573285454045184