I have only gotten the flu shot once, and about two weeks later I got extremely ill. I don't think I've ever been that sick in my life! But for some reason this year I will be getting the shot, for my children's safety. We will see what happens. If I get sick this year I know it is the shot, as I am hardly ever sick. My son got the shot and he's been fine. However, I am staying away from the swine flu vaccine. Wouldn't touch it with a pole!