The nfl, the nhl, are seeing rises in infections. a league source telling cnn that 28 players tested positive today after 37 did yesterday. i mean, what does a rise in cases among pro-athletes tell you about what might be going on in the general population and people who aren't regularly being tested? >> well, you have to realize, again, we have a different categories of people who are vaccinated. those unvaccinated, of course, which we realize continue to drive a large part of the serious illness. with the delta situation. but we are also beginning to see more and more people who have not bee...