When my oldest brother started first grade he brought home chicken pox, mumps and measles (but not all at the same time). That was pretty much the norm back then. When the oldest sibling started school he would bring all of the childhood diseases home for the whole family to enjoy.
I am 75 years old and I never had any of the so-called childhood deceases...No mumps, measles, chicken pox...NOTHING..
I’m in my 80s, had chicken pox and measles at the same time as a child.
Also had both the single shingles shot and the 2 shot series.
Have to admit that the second shot of the 2 shot series made me pretty sick.
Ran a fever and joint pain.
I should be shingles proof.