To open up again we need to bring the demand on healthcare services down and we need to do it sustainably, i.e. in a way which prevents another exponential spike. If we can achieve that aim without mass vaccination of healthy young people then great, of course, let's do that. But: if the only way to squash this thing and return everyone to a somewhat normal life turns out to be to keep vaccinating until we get right down to the twenty year olds, shouldn't we do so -- for their sake as much as everyone else's?
