So, it wasn't advice that masks should never be worn in a classroom setting; it is more a matter of those risks being weighed up in different class settings. We know that classrooms vary hugely; from a modern twenty-first century school to a school built in the nineteenth century, the physical conditions are very different. As it happened, Llywydd, I was in a conversation with the headteacher of a large school in Cardiff on Friday afternoon, who'd just received the letter, and he was, I think, very positive about it. He was very aware of the Children's Commissioner for Wales's advice about the adverse impact that it has on children when they are wearing masks hour after hour in a school setting, and he felt very confident that he and his staff would be able to make those judgments in the specific settings that they faced as to when wearing a mask would be sensible and when you could safely allow children to learn without being confined to them.

The final point, Llywydd, that Rhun ap Iorwerth made was about making sure that there are services for young people and others who fall ill through long COVID, and my colleague the health Minister made a recent statement on that matter. It's one of our reasons for hesitation in the current circumstances because while the link between falling ill and hospitalisation has undoubtedly been amended by vaccination, large numbers of people falling ill in the community is not to be dismissed as though that wasn't a matter of continuing concern, because the more people who fall ill in the community, the greater the risk there will be that some of those people too will then suffer not just a temporary or minor illness, but an illness that will live with them for weeks and months beyond.