Worldometer has Nebraska at a known infection rate of 1%. IF you believe some Dr.s at the CDC estimate that there are 10X as many people either infected or recovered as we have positive tests for, then that would make Nebraska's population immunity potentially in the 10% range. That's still a lot when you think about it. One in 10 people you would meet walking down the street would either have had it or currently have it. Realistically I would think the number would be much higher than that for people who have to work in public or who frequent bars.