eligible americans can t even be bothered to get one shot, so how do we convince them to get three? for more on this latest development i m joined by the top public official doctor francis collins he s thank you so much for coming back on the show. do the person at home who is watching right now, who might be fully vaccinated, have their double shudder pfizer or moderna, we ve been told day after day for the last few months that they are fully protected. 80%, 90% efficacy. why do they need another shot so soon, explain that to them. i d be glad to try. yes, they are fully protected against severe disease, or hospitalizations because the vaccines are working well so far, and that situation even against this really nasty delta variant, but if you watch the data very closely, and many of us involved in this have been studying this daily, you can begin to see some waning of that protection, we are seeing