I was diagnosed with MS shortly after receiving the series of Hep B vaccines (I worked for a healthcare provider and was required to get it.)
For a few years, British researchers thought they could tie the Hep B vaccine to MS, but that theory fizzled.
I don’t know if it “caused” the MS, but I do believe it could have been a trigger. I don’t get flu shots, the only vaccine I’ve had since diagnosis was a pneumonia shot and it sent me into an exacerbation, so no vaccines for me.
Did you see the thread on here yesterday about the new theory about MS? It’s worth tracking down. Good luck.