scratching our heads is for someone like myself, for example, joshua. icu doc. nine months ago, i got fully vaccinated. why do i need a booster shot in there is no evidence that folks like myself, less than 65, otherwise healthy, need a booster shot and that's a big part of the country. and so, one, do -- should we be giving booster shots for everybody? lot of us feel, no, the data just isn't there. number two, it actually makes our efforts to convince those who have yet to be vaccinated to get three shots now because now they are thinking that two shots don't work. that is exactly direct quotation from what i have heard from many people now since this announcement was made on thursday. >> we should be clear, though, i mean, there are some vaccinations that we do take more than once much you take flu shots more than once because there are reasons to take a flu shot. even if it protects you one season, it may not necessarily protect you in another year. but i hear what you are saying in terms of just the data on people who do not have a condition that would otherwise compromise their immune system.