I thank Hefin David for that, Llywydd. And let me begin just by associating myself with his opening remarks. I think there's a lot to be concerned with at the triumphalist way in which some of the right-wing press in the United Kingdom have reported Pfizer's announcement. Of course, it's welcome that their stage 3 trial has met with success, but that is not the end of the story at all. There are very important further steps that have to be taken before that vaccine, or any of the other 11 vaccines that are at stage 3 trials, might finally come to fruition, and I really, really do not want people in Wales to take the wrong message from what was being said yesterday. We will be fighting coronavirus with the current armoury that we have at our disposal for many months to come, and, while we look forward to the day when there is a vaccine, we need to be cautious in the way we approach it and not persuade people to act as though coronavirus is over and help is just around the corner. It really isn't going to be like that. 

In the meantime, we have an agreement with the UK Government. My colleague Vaughan Gething, was in a meeting with other health Ministers across the United Kingdom, on Thursday of last week, agreeing a whole series of measures. We will receive our population share of any vaccine once it becomes properly approved and available. The planning for its storage and distribution will be in the hands of the Welsh Government and, in relation to the Pfizer vaccine, that is a particularly important responsibility because this is a vaccine that can only properly be stored at very low temperatures indeed, far different to the way in which those who have been to have their flu vaccination at a GP surgery will see it stored in an ordinary fridge and absolutely safely in that way. The Pfizer vaccine is nothing like that at all, and the logistical issues that will fall to the Welsh Government are very real, but have been in preparation for many months, and when we get to a point where there is a vaccine that is genuinely safe and known to be so and for use in the population, then we will be prepared and ready to do that here in Wales.