I am not an expert, but there has been a lot of hope recently that because we have much better understanding of protein structure (e.g. https://cen.acs.org/phar

I am not an expert, but there has been a lot of hope recently that because we have much better understanding of protein structure (e.g. https://cen.acs.org/pharmaceuticals/vaccines/tiny-tweak-behind-COVID-19/98/i38 https://cen.acs.org/pharmaceuticals/vaccines/tiny-tweak-behi...) and because mRNA allows us to tightly control the genetic sequence, there is hope we could target some part of the virus that _is_ well-conserved across variants. e.g.: https://pharmaceutical-journal.com/article/feature/preventing-the-next-pandemic-the-search-for-a-universal-flu-vaccine https://pharmaceutical-journal.com/article/feature/preventin...