That 8 day time is interesting to me, because it was on about the 8th day that I started getting much worse. I had been cruising for about 5 days with general weakness and low-grade fever. Because I had been around some people who found out they had covid, I thought I might have it, so got tested, because I wanted to be able to verify I had it before visiting relatives a few weeks later, who were concerned that I hadn't had the clot shot. I was tested with this horrible swab that was like ground glass up my nose. It was a couple days later that the symptoms got way worse, with high fever and fatigue so bad I could barely get out of bed.