No one batted an eye at getting the flu shot every year before 2020. It’s most likely going to be a yearly thing for the foreseeable future. You can’t have a world event like that and expect things go back to what they were without any changes to our daily lives.
I got my booster shot on Friday and I’m still alive. I feel wonderful. I like science. I like scientists. I like doctors. I also got a flu shot a few weeks back. I have no idea what is in it. I have never given a shit. Because I’m not a doctor.