First rule of Statistics - Figures don’t lie, BUT LIARS CAN FIGURE!!!
I agree. There is statistical data out there that supports both sides of this. It's difficult to sift out the wheat from the chaff.
When I was young, my parents did not get the flu shot until one year that they had the flu bad. We all got the shot after, until a few years later when we all had the flu. My parents continued to get the shot but I haven't since. I can't honestly tell you, from my experience, one way or the other.