Between having read detailed descriptions of the 1918-19 flu pandemic that killed 50-100 million people worldwide, and having a number of close friends in epidemiology whose knowledge and opinions I respect--you bet I get a flu shot. No bad reactions here.
"My predominant feeling is one of gratitude. I have loved and been loved;I have been given much and I have given something in return...Above all, I have been a sentient being, a thinking animal, on this beautiful planet, and that in itself has been an enormous privilege and an adventure." O. Sacks