In this latest Generation Gap Lockdown Podcast Clive talks to his Millennial daughter Sarah about "testing" for Covid-19. Sarah is studying BioChemistry at university so helps to try to separate the different tests being carried out to help fight the virus and explain what is involved in each case. They also consider the wider practical issues around testing and vaccinations - not least even if you have a proven vaccination how do you get it to 70 million people?