Not being a medical type I imagine a small percentage of people do get the flu from a flu shot, but I have received a flu shot every year since I can remember. First, starting as a young man, courtesy of Uncle Sam for 30 years, then on my own since and I have never had a case of flue as a result of the shot and honestly don't remember anyone else who received the shot getting it either other than a few minor symptoms appearing on an insignificant number of people.
The flu vaccine is a killed vaccine. You can't get the flu from the vaccine.
No they don't. As I understand it, the old vaccine that was used many years ago was a live virus type and it was remotely possible to get the flu from taking it. The vaccine used today is a killed virus type and it can't infect anyone. Of course Bonesmccoy knows far more about this than I do, but I think I'm correct.
In any case, my wife and I have taken the shot every season for the last 20 years or so and have not had the flu since. Colds yes, flu no. If you have had the real flu you know the difference. Before we started getting the shots I usually came down with flu at least once every other winter, and my wife a little less often. After years of nagging, our son's and daughter's famiies also began taking the shot a few years ago and have not had flu since.
My sister believes the old wive's tales and won't allow anyone in her family to take the shots. One or two of her family has the flu every year and no one in mine does, so you would think she would eventually realize that the old myths are just that, myths.
Since the vaccine this year was not formulated to protect against the most prevalent virus strain, someone in my family may get flu. But if so it won't be because the vaccine gave it to us.