Twelve months ago, I knew nothing about vaccines, coronavirus, or isolation. A year on, I have learnt a lot about vaccines. I realise that there is a whole world out there that I still know nothing about other than the veneer I have read, but I am deeply grateful for the level of expertise and commitment from the professionals in the field. This time last year, I was off to Africa on my tod to walk up Kilimanjaro. Part because it was one mountain I missed out on when clim