Dave Dixon’s latest chart showing what breakthrough infections look like in Minnesota. As you can see, the per capita rate of breakthrough infections obviously can only go up, but is at a low level. You have two moving pieces, both the number in the vaxed population and the number of breakthrough infections are increasing. At some point the vaxed will stabilize and the per capita rate will just move up, probably slowly. But you can also see that even in recent weeks, the great bulk of growth in total cases, hospitalizations and deaths in among the unvaxed population. That too will shift as the unvaxed group shrinks in size.
The state of Minnesota is saying it will routinely provide data on breakthrough infections going forward, so we will see what we get.