How good is your memory of first-hand accounts of weird, extra-severe flu-like illnesses from coworkers and friends in previous years? One possibility is that p

How good is your memory of first-hand accounts of weird, extra-severe flu-like illnesses from coworkers and friends in previous years? One possibility is that people get weird severe flu-like illnesses fairly regularly (perhaps every few years for most people), and they recount those experiences to their coworkers and friends, and no one thinks much of it until there is a global pandemic of a respiratory illness. I can only recall one such illness that I experienced. I was in college living on campus, and I felt like I had been hit by a truck for 2 days before I made it to the campus clinic. I tested positive for influenza, but if I hadn’t, and this pandemic had happened 6 months later, I almost certainly would have been tempted to attribute it as one of these supposed extremely early cases.