Pfizer says vaccine protection lasts at least 6 months after second shot.

I will stress this again, because ya’ll can’t read: “six months” DOES NOT MEAN “only six months.” It means that was the resolution of the study.

But that’s good news. I’d expect natural immunity from Covid (as in, catcing the virus) to last about two years in most people (say 90%), and about 2-3 years for the vaccines, particularly the mRNA-based shots.

But time will tell.