Back by popular demand! John C. Bivona is an infectious disease expert and he gives us an update on all things pandemic related. The efficacy of vaccines, what we know and don’t know, should kids get vaccinated, are you immune if you’ve already had Covid, whether Covid was leaked from the Wuhan lab, what we know about the Delta variant (and other variants), vaccine hesitancy, and much more. John is a Senior Biosafety Officer for The University of Chicago – Howard T....