I agree with The Man. By getting flu shot, you are just injecting yourself with the flu. So you can either get the symptons when you get the shot, or you can take the chance you will get it later.
I take my chances. A healthy body will fight it off.
Flu shots, tetanus shots, vaccinations....foooey. Who needs them.
And one little tip while I am here. Open the windows in your house during the winter. It may sound crazy, but it works for me.
My theory (and some others) is that you don't get sick from the cold weather, you get sick from the germs building up in the warm unvetilated indoors. ONce a day , or few days, open the windows and let the fresh air in. It'll work wonders.
Just my 2 cents.