I was in the age group where they came back decades later and said our immunizations were not valid. Being in a college setting at that time, I had to get the MMR again. I developed the rash (no itch or other symptoms). Dr. begged me to allow me to show the rash to everyone he could drag into the room. “This is the Measles rash. You probably will never see this again.” Not so much, I guess.
You and I, the same age. When I started Grad School, the University where I got my undergrad, had started the MMR requirement for people like us, who got the “defective” vaccine. I had just gotten married and Catholic-natural-family-planning (lol) and I thought for myself and asked about a medical exemption (same thing when I was applying in the 2001 on for teaching positions). The university tried to pull the old you have to get a new shot. I told them that the shot is NOT recommended if one is expecting and if I was forced to get the shot without knowing I was expecting that I would SUE the hell out of them. Medical exemption form provided.
My first child, I had the usual blood work, one was for immunity to MMR. Yes, I am immune despite the “bad” vaccine.