I had my first flu shot last year. I immediately got sick. I also had to fly from SEA-DCA that day.
It was not the most fun I had had in a while, however, the flu shot reaction was quite short. I got over it quite fast.
I have another friend who had the same thing happen to her.
Would I get a flu shot again, probably.
My taller half is in grad school -- a disease vector, she travels by train/plane every week.
Did I have a cold/flu/bronchitis after my flu shot? No. The first year in a long time.
lala