Yes I do. Years ago before we even knew anything about CF, a coworker got the flu and ended up with a horrible secondary infection. So we started getting flu shots offered at work. I noticed that I no longer got that pesky fall and spring head cold that I usually had gotten in the past.
Two years ago the H1N1 hit our area hard and vaccine wasn't available. My husband caught it on a business trip and it scared the HECK out of him. He said it was the worst he'd ever felt, his lungs burned and he was terrified that if DS got it, it would be very, very bad.
So we always get the flu shot. Have always gotten -- me for the past 15 years or so and none of us have ever had a reaction from it.