Yes, that is interesting. IMO, an easy way to keep Covid-19 numbers up is to cannibalise falling influenza numbers.
“Hmm. You have the flu, buuut... Could be the ‘rona! Can’t be too sure...” [check!]
Technically, that should not be possible, as testing for the flu won’t reveal the ‘rona. However, where tens of thousands of dollars per ‘rona patient is concerned, folks should be on the lookout for shenanigans in counting.