It’s technically novel but highly structurally and functionally similar to SARS-1. Someone who got SARS-1 17 years ago has t cells that react to SARS-2 today.

It’s technically novel but highly structurally and functionally similar to SARS-1. Someone who got SARS-1 17 years ago has t cells that react to SARS-2 today. Similarly, but less strongly, exposure to other human CoVs produces t cell cross reactivity. The “suppression/eradication” is just dogma. BTW eradicating SARS-2 is impossible. It’s zoonotic in origin. Viruses with abundant animal reservoirs can never be feasibly eradicated. Please do some reading on this it’s basic stuff.