We've got this potentially tough winter ahead and hopefully tens of millions of people are going to be getting flu and COVID vaccinations in the coming months. I wonder if we can just talk about the flu vaccine. Do you know how that's looking this year? How well matched that flu vaccine appears to be against the flu that is circulating in other parts of the world that may be coming here? It's actually looking quite good. Perhaps that's because influenza has been through such a hiatus and it's become a little bit more predictable, which are the strains of flu which are going to grow out.