People want to believe that covid-19 has already worked its way through the entire community because they want to believe that this is almost over.
The data does not support that position.
In the US Midwest it was very harsh for flu, conjunctivitis, strep, etc. My children both had coughs, fever, ruptured right ear and one had chicken pox style rash (late December). Doctors never tested my son, my daughter tested negative for flu with multi-day symptoms and then positive for flu A (same test) ~10 days later. So there is/was a definite lack of data. Unfortunately, we do not have the samples to go back in time and apply newer tests. Luckily, France had the foresight to preserve some of the samples.
They are being offered inexpensively at least here in NYC by commercial urgent care facilities.
I expect the mail-in Labs will get geared up pretty quickly also.