Comment by abduhl

Your argument boils down to “well the body learns what it looks like and so discriminates against similar looking viruses with more exposure allowing more targeted responses.” Under this theory, shouldn’t a natural immunity (as obtained from prior infection with alpha/delta) result in better immune response because it has learned “more” way to discriminate than the spike protein? Boosters seem inappropriate if the theory is to provide a wide database against which the immune system can check for similarities and associated response because they are targeted at the spike protein.