Good discussion.
You mention that 'there could be other variables that played into his situation'.
The major one that I can think of off the top of my head is this: it takes two weeks to get an adequate antibody response after receiving the shot. I don't think doctors 1.) either do a good job of explaining this to patients 2.) some of them are just too dumb to to know how the vax works.
So, scenario then: you get a flu shot. Two days later you are exposed unbeknownst to you. You get the flu. Based upon a temporal association (damn I just got the flu shot and now I have the FLU) you wrongly conclude it was the shot.





- WillBrink /// "Comey is a smarmy, self righteous mix of J. Edgar Hoover and a gay Lurch from the "Adams Family"." -Averageman