What is "mild" anyways? I had one of the worst fevers in my life back in early March, but since I was only bedridden for 3 days and never felt so bad I might die if I don't go to the hospital I couldn't get tested. For COVID-19 it wasn't that bad, but I'm having a lot of trouble believing it was something else because I'm 40 and haven't had influenza since childhood. The symptoms were either influenza or a short COVID-19 case. A positive antibody test would make me feel better. It's still worth it even if false positives are possible. Whatever it was my wife got it exactly a week after me. Both my parents were exposed to us before I realized it might not have been influenza, so I was nervous for a while. My father has heart disease.