I’ve only gotten a flu shot once and I ended up getting the flu.
I seem to fight that sort of thing off pretty good. What drives others to their knees makes me a little achy and feverish but seldom really makes me sick.
I had the same experience as you. The worst case of flu I ever had was brought on by a flu shot.
I have never taken a flu shot since—and have never had the flu again.
I never got the flu either until my hospital mandated the flu vaccine for everyone or lose your job. This coincided with the 2008 Flu Challenge that Merck promoted on the Joint Commission for accreditation of hospitals/health care facilities and has intensified ever since . No conflict of interest there.
This is a racket to force people to do this - just makes the drugs companies richer, and gives the false illusion that you are protecting yourself. If you want the vaccine, knock yourself out. If you wash your hands with soap and water regularly, cover your face when you sneeze and cough, and take some Vitamin D - you’ve done way more for yourself and those within your spew sphere then the flu shot could ever hope to do.
I got my one flu shot in the AF in 1966. I also got the only serious case of flu I have ever had following that shot.