Caught a bad flu in late 2018. Lingered for two months. Cough so bad, I dislocated a rib. Had X-rays taken, and everything. Took about a year for the the rib to stop slipping whenever I exerted myself. In the end, it was a period of discomfort that set me back a spell, but which I ultimately got over. Probably wouldn't try to shut down society over it, or use it as proof that people should fear the flu. Just that sometimes you get sicker than usual.