We've known no such thing.
Waning vaccine effectiveness says nothing about the viability of our immune systems.
“We’ve known no such thing. Waning vaccine effectiveness says nothing about the viability of our immune systems.”
Yes; Fauci-ites and Big Pharma toadies will say that, and it’s nice that you’re so loyal to your masters. (VAERS reports show otherwise. And those are the reports they hadn’t been able to scrub yet.) And how can anything “wane in effectiveness” if it never had been effective in the first place?