It's been estimated that 25 percent of Americans are experiencing something called "Vaccine Hesitancy." In other words, one out of every four of us haven't, and aren't planning on, rushing out to get the COVID-19 vaccination.
Thinking back, I'm pretty sure I would have been a much better student if I had known that there was a dozen free donuts (or do you prefer "doughnuts?") waiting for me at the end of the academic trail.