Like most Boomers, if not all, I got the booster just before entering kindergarten at the age of five. I think that was getting it all at once for sake of convenience. AH-HAH! That’s what’s been wrong with me all these years! LOL!
When you and I were Boomer children I think there were six or seven shots required to attend school.
In some states now the number is approaching 50. Surely they are not all medically necessary. Most I suspect are kickback deals a la Rick Perry/Gardasil.