We’ve known about natural immunity for 2,500 years and 2.5 years ago Fauci and other government officials seemed to forget about it completely.
The Plague at Athens, 430-427 BCE.

We’ve known about natural immunity for 2,500 years and 2.5 years ago Fauci and other government officials seemed to forget about it completely.
The Plague at Athens, 430-427 BCE.