My DH gets the shot each year. I don't. I take Vitamin A and a Zinc every day and it is extremely rare that I even get a cold - if I do, I take an Alkaseltzer(sp?) cold medicine with hot water before I go to bed and usually does the trick. Even if I do get the flu, it is usually extremely light and over in a day, and usually around January as you wind down from all the holiday stress.
Marysewfun