hospital, as well as dean of tropical medicine. voted to recommend pfizer vaccine for people 16 and older. what kind of difference will that make? >> well, i think, first of all, it's long awaited, and we want to remind the american people that the emergency use authorization process was sound because it required their cooperation, and this is a great validation for the work of both the centers for disease control and especially the fda that they got it right through the emergency use process. i think, you know, a lot of people are hoping now that it's fully approved, it's going to flip a lot of vaccine-hesitant people to now getting their first shot because they were waiting on this. i don't know how much of that is really the case. i think there's a pretty big group that's deeply dug in ideal