http://sharylattkisson.com/govt-researchers-flu-shots-not-effective-in-elderly-after-all/
Do read that writeup.
Lots of official statistical shenanigans with this shot. Lots.
Then don’t get he flu shot, if you don’t think it works,. Personal choice. I’ve been getting the shot for the last ten years, beginning the year after I got the flu and and missed Christmas, New Years, my birthday, and about two weeks of work. I have not contracted the flu since I started getting the shot.