[convnet]

That is simply false on a basic level. That notice by the CDC says the EXACT OPPOSITE of your comment. They're recommending that labs switch to a multiplex test that can screen for both flu and covid at the same time because PCR only detects SARS CoV 2.

[verygoodname]

Note: the "multiplex test" is most likely still a PCR test (just 'multiplex PCR' instead of 'single-probe PCR'), so where you say "PCR only detects SARS CoV 2" it should say "the currently-used PCR test only detects SARS CoV 2".