Maybe because anyone who ISN'T a hand-wringing hypochondriac doesn't go for "medial treatment" for the sniffles?
One reason is we KNOW it HAS to be that disease.
As stated in other post, my mom got it and tested first, then I got symptoms and tested. In our respective houses the others got it within days (it spread like wildfire). No question what it was.
I just made my household test antibodies later to verify.
Oh, and BTW, I merely tested for COVID. Did not have any appointment even virtual. Just figure if mom got it it would get me too.