That is certainly possible, which would make the shots ill advised IMO.I was already immune before my shots
You laugh and have been making fun of me for mentioning that possibility/fact.
I believe(and some data shows) that people that had a bout with the nasty Rona in the early 2000s have strong immunity to this version.
I believe I was exposed and had a bout with it back then, I had bad lung aids for two months or so(worst lung issues I ever had). I haven't been tested then or now, so it is just a guess and a possibility.
Our species has so much diversity in genetics and exposure to different shit, it truly is our strength and likely is the only reason we are still around as a species today.
Real Science.