“Jan 2020”
Early.
I had a case of the flu in ~Feb 2020 [Deep Flyover Country]. Didn’t get it tested to see what type.
Took about 2 weeks to get close to recovering. No hospitalization but did get an albuterol inhaler to ward off pneumonia.
Who knows what it was. No testing on my part.
I’ve heard similar stories from a lot of people. Some going back to late 2019 with complaints of the worst “knock ‘em on their ars” flu they ever had. No way to know really, probably too late to find out.