I entirely agree with the substantive point that Delyth Jewell is making. None of us is safe until all of us are safe. And that's the case for making sure that rich countries like the United Kingdom play our part—our full part—in assisting the rest of the world. It isn't simply a matter of generosity, it is a matter of enlightened self-interest. But until we can get the rest of the world in that position, then exactly as Delyth Jewell said, and as I quoted earlier from former Prime Minister Gordon Brown, somewhere in the world another variant will be brewing and, next time, we might not be so fortunate that the defences we've built up so far will be as effective in responding to that variant as we've been able to mobilise defences against the alpha variant, the delta variant and now the next great effort to deal with the omicron variant. The whole of the world needs to be protected in order that each one of us can be protected.