Covid cases are rising again – how worried should we be?

After falling for the past few weeks, the number of Covid cases in the UK is increasing once more. Since the easing of restrictions, scientists have been expecting an upwards trend in infections – but could other factors also be at work? Guardian science correspondent Nicola Davis speaks to Anand Jagatia about the latest coronavirus data and what it could mean.. Help support our independent journalism at theguardian.com/sciencepod