the competency of our politicians and the ability of the American people not to slobber on each other.

:doomer:

I think if the vaccine doesn't mutate (or even if it does but the mutation is still zapped by the vaccine) it will be quite a bit less than a year or two before immunity happens. If the US averages 1 million vax per day it's herd immunity by the summer. 750k a day and it's immunity by the fall.