that wasnt
at all what I was saying! But you at least get the drift. and dont forget the memory T and B cells
that reignite long after the antibodies last.
Coronavirus: will immunity rapidly fade or last a lifetime?
March 5, 2021
https://theconversation.com/coronavirus-will-immunity-rapidly-fade-or-last-a-lifetime-155905
COVID-19 probably sits somewhere between measles and flu. It’s not as stable as measles and it is not as changeable as flu. We might expect immunity to last against COVID-19, but probably not as long as measles. And we’ll probably have to vaccinate against variants that emerge, as we do for flu.
One thing we’ve got going for us is the repetitive nature of the surface of SARS-CoV-2. The spike protein covers the surface of the coronavirus in a fairly uniform manner. Antibodies to smallpox, which also has a highly repetitive surface, last a lifetime. In this situation, macrophages (a type of white blood cell that engulfs and consumes pathogens) might be better able to gobble up the antibody-coated virus.
If the spike protein mutates and antibodies can’t bind as well, it’s well worth giving a booster shot against the new spike protein — which is what is planned.