How effective are the mRNA vaccines against the new strains/mutations? Do we have hard data on that yet?
They seem to be mostly effective, albeit still giving less of an immune response than would be possible.
Also Curevac is working together with GSK on a multi mutant mRNA vaccine. Since the mRNA approach seems to be flexible it's reasonable to assume this will allow quick adaptations like this.
https://www.curevac.com/en/2021/02/03/gsk-and-curevac-to-dev...