To the best of my knowlede, the Novavax vaccine actually does this. Instead of delivering an mRNA nanoparticle, it delivers a spike protein nanoparticle. In fac

To the best of my knowlede, the Novavax vaccine actually does this. Instead of delivering an mRNA nanoparticle, it delivers a spike protein nanoparticle. In fact, they just started phase 3 trials: https://www.sciencemag.org/news/2020/12/novavax-launches-pivotal-us-trial-dark-horse-covid-19-vaccine-after-manufacturing https://www.sciencemag.org/news/2020/12/novavax-launches-piv...