I wrote yesterday about the spread of the UK B117 variant based on data up to the 13th Dec warning that it could become dominant across much of the UK & across most age groups. Recent data released up to end of Dec now suggests that this has already happened. Short thread. https://t.co/BqhfEVlgMx

— Dr. Deepti Gurdasani (@dgurdasani1) January 1, 2021