I am convinced that if 100% of us were tested, regardless of where we've been, or who've we've been around, 40% or better of us would test positive. And if we really studied how we've felt compared to when 100% healthy, we'd probably be able to recognize days when we felt like crap; maybe attributable to a virus inside us.
We don't know what we don't know, and it appears we don't even know what we do know.
But I'm betting the only football we'll be watching on TV this coming fall is the games we choose to watch from last years and years past. It isn't a health issue now, its a liability issue; the greatest risk in our country today IMHO.