one of my big brothers and three older sisters had the polio shot. before my time, i never got it.
my brother used to suffer seizures up until he was 12 yrs old and just "outgrew" them.
he has one foot a size smaller than the other now, too.
i think its the polio shot that did it
currently, he's 64 yrs old and has stage 4 prostate cancer

So sorry to learn this about your brother. We will never know the actual harms done over the past centuries by their meds. Had them all, dutiful parents, left many problems with us kids. God bless you and yours.