I guess you are defining “the flu” in a very broad way. Fine, but what’s your point? Here’s an article from a public health expert (who I heard speak last week) about what’s expected this fall when COVID-19 and common influenza hit as the same time. Clearly he doesn’t see the two as being the same thing. https://jamanetwork.com/journals/jama/fullarticle/2767284?guestAccessKey=6e7bf09d-55dd-4bbf-9d37-2bfc4b352828&utm_source=jps&utm_medium=email&utm_campaign=author_alert-jamanetwork&utm_content=author-author_engagement&utm_term=1m
I walk for exercise, so I was pretty much walking around the stadium. I Didn't stay in any one spot too long. A couple of security types saw me, and all they did was smile and nod, but I wasn't making a pest out of myself in any one spot. Five or six minutes at any sport was the longest I took. But that's mostly because all you could see was the little strip of field through the breezeways, and a lot of the time all you saw through the zoom lens was either one guy standing around, or nothing. That gets old fast. Five minutes, and it was time to try my luck looking through another breezeway.
The name is Independence Day. The resolution of independence was approved by the Continental Congress on July 2nd. John Adams thought that would become the most celebrated day. It didn’t necessarily have to be the 4th.