A coronavirus variant which escapes vaccine immunity could take the world by surprise, Sir Patrick Vallance has warned.
Speaking at a virtual Royal Society conference, the Government's chief scientific adviser for England also said the "world needs to be ready" for inevitable future pandemics which look very different to the current one.
Sir Patrick told scientists at the meeting about the 100 Days Mission, an initiative which aims to "prevent future pandemics before they start", according to the Government.
