Thank you very much, acting Chair, and I'm very pleased to contribute to this debate on an excellent report by the chief medical officer, and I move the amendment on air pollution. More on that in a moment.

In terms of time, the other point I was going to focus on was immunisation against MMR—a fundamentally important point that the Minister has already referred to. Our chapel in Swansea has an enormous cemetery, over four acres, and it's heartbreaking to see the graves of young children there. The cemetery has been there for two centuries. The names of very young children and babies are listed on the gravestones. They died in their hundreds over the years because of diphtheria, tetanus and a number of other diseases.

Back in 2012-13, when I was a full-time GP, a case of the measles arose—it started in Swansea—in my practice, in Cockett, where I was a partner at the time. The numbers that had received the immunisation against MMR weren't sufficient to prevent this disease from spreading. It does depend on herd immunity. It depends on the fact that 95 per cent of children can't catch measles because they have been immunised against it. The virus is still alive in our communities. It depends on the fact that 95 per cent, however, can't catch the virus because they have been immunised. There are a number of children who have particular conditions who can't receive the injection, so it is incumbent on all other people who are fit to receive this injection to have it.

Before immunisation against measles, thousands of children and young people caught measles every year here in the UK, and hundreds died from the condition or suffered continuing after-effects, such as deafness, throughout their lives. Now, with the advent of MMR in 1988, for several years nobody died from measles, and there were no cases at all of measles for many years, until recent years when levels of immunisation have fallen below 95 per cent, and sometimes significantly below 95 per cent. Back in Swansea, around seven years ago, the level was around 82 per cent, so there is little wonder that we had a number of cases of measles, with one death, unfortunately.

The other point that the chief medical officer makes in the report—there are a number of points, of course, but, because our amendment refers to air pollution, I will talk about that particular issue, which kills or contributes to the deaths of 2,000 people in Wales every year. We've heard from Lee Waters this afternoon that there is an air quality crisis here in Wales, and of course there is a climate emergency as well. And, of course, air pollution is a public health crisis, as the chief medical officer has outlined in the excellent report this afternoon.

So, we do need to take action urgently, particularly to decrease emissions from cars and lorries on our streets and roads. We need to legislate in this field, because it is a climate emergency and it is an emergency with regard to public health. I am the chair of the cross-party group on a clean air Act, created here at the Senedd, so that we can create clean air zones in our towns and cities. Our children deserve no less than that. We need the infrastructure for our counties to gather information on pollution in their areas. Air pollution is damaging to our lungs, and to our hearts now because nanoplastics—those tiny particles are so small now that they can reach our hearts through our veins and our blood vessels. Those nanoplastics are so small that they reach our hearts and they do cause heart disease. So, do support this amendment. Thank you.