>> later this fall or early this year. many of you i am sure are marking this in your diaries right now. doctor collins -- the center of we -- these are people walking into their pharmacies just pretending it's there for us but really it's their third. are there and the known safety concerns with people doing that, with people going out and getting a third shot right now? >> that's a good question isn't it? and i certainly would recommend that in the absence of better data. pfizer has run a trial on a third dose and they've submitted that data to the fda, the fda is looking at that. but we don't know exactly with the safety issues might be. ice expect that they won't be serious. but if right now, with the full immunization is good enough, i would not encourage people to jump the line and try to get