Re: A long way still to go
Several studies have already come out that a booster doesn't increase immunity in the fully vaccinated, except in the immunocompromised. That's more of a "we must do something, and this is something" knee-jerk response by politicians and the public, as comforting as it is to think that each booster actually boosts immunity.
It will take a whole new "Mark II" series of vaccines to actually keep ahead of variants, though the current ones are far, far better than nothing despite that.