Re:What the Omicron wave is revealing about human immunity
by nradov on Thursday February 03, 2022 @10:16PM
(#30202388)
That remains unclear. Some research indicates that exposure to other coronaviruses might have given some people a limited degree of acquired immunity against SARS-CoV-2.
It was called a novel virus to indicate that no person already had (acquired) immunity against it. What inference you make from the word "novel" is on you, not on the rest of the world.