Viruses like SARS-CoV-2 use sugar molecules to hide from the immune system, but scientists at Scripps Research have designed a universal coronavirus vaccine that strips these sugars and exposes a stable, rarely mutating part of the spike protein. This approach triggered strong immune responses in
i was thinking the same about the abstract, the glycans were shielding the conserved parts epitopes that arnt prone to mutations, as opposed to the exposed parts of the proteins which the virus mutates much more rapidly. you can say the conserved parts can mutate, but it might compromise the structure of the protein, making the virus defective(it probably does happen, but they dont survive)
Mutations will always happen, it’s what viruses do.