I'll need to dig up the study but this has been looked at. At the end of the day it doesn't matter if some fraction of people can still get sick what matters is

I'll need to dig up the study but this has been looked at. At the end of the day it doesn't matter if some fraction of people can still get sick what matters is the reduction. I think that I've seen (again i need to dig good up) is the vaccines reduce likelihood of getting sick substantially. Much more important is the reduction of death and severe illness. Which I think most vaccines do well against. Also in any case none of the variants have been so different that one would need a substantially different vaccine. So a variant vaccine can be produced much easier now