MMR didn’t exist in 1969.
•The measles vaccine was licensed in 1963.
•Rubella in 1969.
•Mumps in 1967.
•The combined MMR vaccine wasn’t introduced until 1971, and widespread adoption came even later.
When scientists finally had a name for SIDS, they could start tracking it properly — and since the introduction of vaccines, SIDS rates have fallen dramatically in every high-income country. Why? Because measles, pertussis, diphtheria, and other infections were major causes of infant mortality before vaccines existed.
If this “coincidence” meant anything, SIDS would have gone up after vaccines.
Instead, it went down.