Vaccine breakthrough means no more chasing strains

This would be amazing. I’m skeptical, though, because it narrows down vaccines to either live attenuated or inactive vaccines. Those are not exclusive. It doesn’t really make sense in that regard. And further, rna vaccines are known to have poorer in vivo performance, so the duration of immunity is a factor. Finally, it’s only been tested in mice and as indicated only provided immunity for 90 days against Nodurama in that trial.