When my daughter was born, in '73, I was shocked that she hadn't been vacinated for that, so I asked the pediatrican , and was told that it was no longer being given. I begged him to do it anyway, and he said that it wasn't necessary. I'm still angry about that !
After WHO declared the disease erradicated, the vaccine was no longer available to doctors. Between around 1970 and the present the only entity in the United States allowed to possess the vaccine is the US military. I got this information from my doctor last week.