There's at least one team working on a vaccine that targets another feature of SARS-CoV-2 that changes less than the spike protein does (the interview I heard c

There's at least one team working on a vaccine that targets another feature of SARS-CoV-2 that changes less than the spike protein does (the interview I heard called it "the N protein"), which could give us a better long-term way to deal with variants. Although I guess it shifts the selective pressure from spike protein mutations to N protein mutations instead. Can't win! Nature is wiggly.