On 1 January 2020, Sarah Gilbert, Professor of Vaccinology at Oxford University, read an article about four people in China with a strange pneumonia. Within two weeks, she had designed a vaccine against a pathogen that no one had ever seen before. 12 months later, vaccination is being rolled out across the world to save millions of lives from Covid-19. In this book, we hear directly from Professor Gilbert and her colleague Dr Cath Green as they reveal...