Apparently the existing booster shot elicited a more diverse set of antibodies compared to the ones from just a two shot regimen. Which is kinda interesting. I forget what it's called, but there's this phenomenon in immunology where the immune system can get "stuck" with whatever initial antibodies it comes up with and doesn't adapt well. Seems that wasn't the case with the COVID boosters, thankfully. And that explains why the boosters have been so dramatically more effective against Omicron (80% versus <40% for those with just two shots, natural immunity, etc; IIRC).
But would an Omicron booster have elicited an even "better" set of antibodies? Would we get back to 90% protection like the good ole days?
And of course the big question; is an Omicron booster going to provide better forward protection?
The results of this study are going to be deliciously intriguing.