I've never gotten one. I've had medically diagnosed influenza once. It was rough. My wife works in the medical field and is encouraged to get the shot. She can decline, but in doing so, forfeits any raises or bonuses for that year. The only exclusions are those who susceptible to severe allergic reactions or whose religion frowns upon it. She gets the shot every year to protect herself and so that she can increase her ability to support my hunting and fishing habit through said raises and bonuses.