Some are calling it Freedom Day. Others are much more circumspect. The lifting of Covid restrictions on 19th July in England is, to a certain extent, an experiment. The UK has one of the best vaccination rates in the world and far fewer people are now dying from coronavirus. But it also has one of the fastest rising infection rates. The development of the vaccines so quickly was, undoubtedly, an extraordinary scientific feat. It did also lead some scientists to predict that we would be through this pandemic by now. So why hasn't that happened? And what do we know about the risks involved in lifting restrictions now?

Azra Ghani, Professor of Infectious Disease Epidemiology, Imperial College, London

Producers: John Murphy, Ben Carter and Kirsteen Knight