They will allow some vaccinations, they must because no doctor or nurse or lab person, or any health care worker is going to get near someone with smallpox or handle lab specimens from them, unless they themselves are immunized---and early enough so they don't risk taking smallpox home to their families. Once people have the vaccinia virus they can spread it among themselves without the government ---just like you can spread chickenpox and flus and colds----because it is a live virus. The government really cannot prevent people from self immunizing if they wanted to do it.