When circumstances change, we need to change our approach. The information that we have gleaned in the past few months has to be factored into any ongoing policy decisions. What do we know now that we did not know two or three months ago? At that point, vaccines were on their way but we were still awaiting European Medicines Agency, EMA, approval. Now we know that there are a number of variants, namely UK, South African and Brazilian variants. Some are much more contagious and some seem to involve higher levels of …