We are going back to the 1800's and the smallpox vaccine.
Nope, didn't work.
Killed more people than smallpox.
How about tuberculosis?
Nope, that was mostly gone before the vaccine, and that didn't work either.
Anthrax vaccine?
That caused Gulf War Syndrome.
Flu shots?
Please, they never work and actually cause far more flu cases.
Covid shot?
9th Circuit said that wasn't even a vaccine.
And we've known for years it was at best completely unnecessary, and at worst absolutely deadly.