Yeah, it’s a little bizarre that they have done so little research into protections against variants that antibodies from already recovering give people.
You’d think it would be an important detail in the fight against Covid and could have allowed a more pinpointed vaccination strategy. It’s clear from the number of infections happening with delta that recovering from earlier variants doesn’t give everyone protection against catching it again or even getting very sick, but I’d imagine they would help for at least some people.
Oh well, vaccine boosters til our balls turn blue and fall off!