Personally, I shoulda, woulda, coulda got a flu shot. But, like the past decade or two, I never did get one. No warning sign of a sore throat, it just hit me like a freight train. Thought I had it beat after a day or two, then it knocked me down for three more days. I ain't had my ass kicked by a microorganism like that since I was a wee lad. Whatever don't kill ya, will make you older. Er some such...