Dr Mark Porter on a new bedside test that differentiates between Covid-19 and other infectious diseases including flu in under an hour. Mark meets Dr Tristan Clark who has already been using the test as part of a trial. And the world's largest study into 'Long Covid' recruiting 10.000 people from 50 different hospitals across the UK who've been hospitalised for Covid to assess their long term recovery. Lead author Professor Chris Brightling discusses the long term symptoms seen in many people recovering from the virus and how research can answer difficult questions such as how long will these continue and what's the best way to help people. And Mark hears from Roz, still recovering from Covid after being admitted to intensive care on May 26th and from physiotherapists Matt and Gemma about how early and long term rehab can help. Plus Professor Sally Singh on the new NHS online rehab service 'Your Covid Recovery'.