I had the flu shot. I also had the flu twice (October and December) and what must have been the flu on steroids in August. There are so many strains, the shot is a crapshoot. They vaccinate for what they predict will be the most active strains. One year I got the shot and later tested for Type A and B at the same time. I told the doctor I was an over-achiever. Haha.

In other words, the shot is not really all that effective.