So speaking about the Sunbelt, my DH was just telling me about the interview an LSU infectious disease expert, on the SEC committee, gave with The Athletic concerning the safety of playing football. Do you remember, when I mentioned the video of the GA school board member who suggested that since close contacts are designated as someone who has spent 15 minutes in the vicinity of an infected person, they should re-seat students every 14 minutes...
Well, apparently this person is also taking the CDC guideline of 15 minutes quite literally. Opposing linemen aren't considered close-contacts because each play only lasts 30 seconds or so. So you don't have to worry about that there are, on average, 72 plays by an offense in a top tier college level game, 30 seconds of, "in your face, high exertion, heavier breathing than normal talking", or 36 minutes worth per game, because it wasn't 15 *uninterrupted* minutes.
Now, I am not an infectious disease expert, but I thought the thing is number of virus particles you breathe in reaching a high enough threshold. I don't think the virus cares if they shoot out for 30 seconds, then rest for a minute or two for the next play, then shoot out again. Or a less intense, but more constant stream for 15 minutes. I would have thought that the "15 minutes of interrupted contact" was a guideline for normal circumstances, and atypical circumstances such as football would have a different set of guidelines.