Not sure why such research is even undertaken when something is so readily obvious from the outset.

Looks like some people are arguing about the merits of the new bivalent 'vaccine' vs the original 'vaccine'. Development of the bivalent versions started in February, since which there have been several major mutations of the virus. The newer 'vaccine' will not likely be significantly more effective.

Omicron has become the new seasonal flu, for which the annual vaccine - without quotes, since it is an actual vaccine and not an mRNA-based thereapeutic - has proven remarkably ineffective.