That's not true.
The polio and MMR vaccines are actual vaccines and do not work the same way as the COVID so-called vaccine.
So your last statement is incorrect. What you said is not true and is wrong
A vaccine doesn’t put an invisible shield around someone.
I breath the same air around me as anyone else, including people infected.
If I’m exposed and the virus enters into me, my immune system fights it off with the knowledge it has from being presented with the virus before under controlled situation, ie; a vaccine.
That’s what vaccines do.
They don’t shew away a virus, they make your body fight it if you’re exposed.
Interesting how their (VPs) goal posts are always moving.