I am curious about childhood morbidity and general health/fitness over time given the gradual increase in the number of illnesses that are now vaccinated or eradicated.

Greatuncle moved his family to Arizona over TB or some polio complications in the 50’s I’d guess.  My mom said she had mumps in the 60’s or early 70’s, which is something I only know about from the Oregon Trail game.  Apparently while I was goofing off in my young adulthood chickenpox parties went extinct and my toddler got an infant vaccine.  So I wonder if such childhood illnesses decreasing, and presumable lowering of the overall infection/disease vector load, leads to better growth outcomes.  Like medicating water in barns.