Which idiot told you vaccines prevent infection?
No vaccine ever built a virus proof filter in the nose.
Only function of any vaccine is to create additional tools in body to fight virus AFTER infection.
The most successful vaccine which eradicated smallpox from earth did not prevent me from getting infected. But I survived smallpox which kills 50 times more patients than covid.
utter nonesense. lol.
I speak from personal experience. You probably have none. You are just regurgitating FROM junk reading.