Diolch, Llywydd. There is some optimistic news in the emerging evidence that Andrew R.T. Davies referred to, but it also finds that two doses of the AstraZeneca vaccine provide zero protection against the omicron variant, although the same caveats apply to that evidence—a small sample, preliminary findings, et cetera. It does find that, even in the case of AstraZeneca, a booster jab would increase the level of protection to 71 per cent. Obviously, getting the booster jab for everyone by the end of the month, I think, is a very important goal, but is there some consideration being given, in the light of this evidence, to giving priority to those who received the AstraZeneca vaccination?