[rsfern]

I can see where people are coming from with that CDC wording change, but I don’t really think “protection” vs “immunity” is inconsistent with the idea of vaccines sometimes just reducing the effects of an infection.

On the delta specific vaccine, I thought they did develop a tailored shot and go through trials? I’m not sure it really mattered, the early research on omicron specific boosters seems to be finding that they’re not any better than the original formulation: https://www.nature.com/articles/d41586-022-00003-y

[Auracle]

It sounds like we’re maybe running in to the problem of original antigenic sin? I wonder if variant vaccines that target something other than the spike protein would work better in those already vaccinated for that reason.