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It will be the shot heard \u2018round the world, once it comes.\xa0But exactly when can we expect a COVID vaccine?\xa0We discuss timelines, how it would work, who\u2019s involved, and the role of human challenge trials.\xa0\nAlso, although he doesn\u2019t consider himself brave, we do.\xa0Meet a Seattle volunteer enrolled in the first coronavirus vaccine trial.\xa0And, while we mount an elaborate defense against a formidable foe, scientists ask a surprising question: is a virus even alive?\nGuests:\n\n\nNigel Brown\xa0\u2013 Emeritus Professor of Molecular Microbiology at the University of Edinburgh\n\n\nIan Haydon\xa0\u2013 Public information specialist at the University of Washington, Seattle\n\n\nBonnie Maldonado\xa0\u2013 Professor of Pediatrics and Infectious\xa0Diseases at the Stanford University School of Medicine\n\n\nPaul Offit\xa0\u2013 Head of the Vaccine Education Center, and chief of the Division of Infectious Diseases, at Children\u2019s Hospital of Philadelphia\n\n\nLearn more about your ad choices. Visit megaphone.fm/adchoices