Busch's case sounds somewhat similar to my experience last fall. On the Saturday before stuff hit the rotating air mover, I felt fine. The next day (Sunday) in the afternoon and evening I felt chilled to a degree that bundling up in a good blanket did not help. The morning (Monday) I got up at 5 AM to go to the bathroom, lost my balance, fell, and gashed my arm. It was a bloody mess. We went to the ER, where it was learned that I had pneumonia and low blood O2 (which probably caused losing my balance). Apparently the infection had gotten into my blood stream, so I was hospitalized for 10 days, with daily antibiotics infusion. The infusions continued another 10 days after I went home.
Sorry for being verbose, but my big point is that things can go critical VERY suddenly. It may be that Busch's generally very goodphysical health obscured warning signs that if heeded might have saved his life. I experienced 2 or 4 weeks of poor stamina, but have been doing OK since then.
