Seriously? The immunity system is taught how to fight the virus. Immunity systems of different people can even have small dialogues like, "Hey, how are you're doing with the virus? " "What virus? Haha!"What the vaccine does is teaching our immunity system of how to efficiently fight the virus. So even when you get infected, if you are vaccinated you are even starting to defeating the virus inside you, making it less possible to spread from you. Did you even know that?
I know how vaccines work. Only the number of fully vaccinated people being admitted to hospitals is increasing as the new variant spreads. It's also said that Pfizer/Moderna vaccines offer only 33% protection against Omicron variant. Astra offers even less and it can take you to the grave.