UK Covid cases are rising again - how worried should we be?

Why are cases of coronavirus in the UK so high right now, and how worried should we be? Why do so many other countries have lower case numbers, and would the government’s 'Plan B' of restrictions in England - including a return to wearing facemasks and working from home - make a significant difference alongside vaccines?In this episode, ITV News Presenter and reporter Faye Barker speaks to Ravi Gupta, Professor of Clinical Microbiology at Cambridge University, who is also on New and Emerging Respiratory Virus Threats Advisory Group.