During the Cold War, health was important. With war possible, the strongest most resilient people were needed.
The Baby Boomers would all be vaccinated against diphtheria, tetanus, whooping cough, at birth, and wear the scar on their upper arm. Without that proof of vaccination, the child would not be admitted to school.
One didn’t oppose vaccination, one embraced it as proof of advancement.
When polio was conquered, everyone took their shots.
In those days, many Baby Boomers suffered childhood diseases as Measles, Mumps, Chicken Pox, as there was no vaccination until 1971.
The Baby Boomers insured their children got all the injections, so as to be healthy.
Having suffered measles and mumps and what was called German Measles (Rubella), the Baby Boomers would protect their children.
This meant a healthy population.