No one born since the late 60’s has, in fact, been vaccinated against smallpox unless they traveled overseas. They stopped even that vaccination in the 70’s IIRC. I’m in my mid 40’s and i’m the only one in my age group locally that has the smallpox scar. We traveled overseas when I was a wee babe.
I got my last smallpox vaccination at the US Customs office (actually a small tarpaper shack) at the old Laredo, TX airport in 1959. I was returning in my own airplane from Monterrey, Mexico, and did not have the yellow card that was required showing vaccination history back in those days. The agent said "roll up your sleeve" and popped me on the spot.
It was free!