More than 12 million people have now received their first dose of a COVID vaccine – but how much more do we now know about the jabs?On the Sky News Daily podcast with Dermot Murnaghan, we are joined by Professor Jeffrey Almond, visiting professor of microbiology at the University of Oxford who also advises the vaccine task force.We examine the differences between vaccines, dispel facts from fiction and discuss the possible benefits of having doses from two different manufacturers - with the help of a walnut analogy.Plus, we hear from nurse Delia Clarke who talks about the “emotional” experience of inoculating her first COVID vaccine recipient. Daily podcast team:Podcast producer - Annie JoycePodcast producer - Nicola EyersPodcast producer – Lauren PinkneyInterviews producer - Tatiana AldersonArchive - Simon WindsorArchive - Rob FellowesArchive – Nelly Stefanova Music - Steven Wheeler