I don't know what Fauci is thinking but we had pre-existing immunity to the 'rona before 2020. Depending on the study, it was 25%-50% of pre-existing immunity. Add in the folks that got immunity from being sick and that's between 20%-40% depending on the study. That puts us at a minimum of 45% and a maximum of 90%. Obviously, maximum is not legit because we still have quite a few people getting sick and dying from it. 83% is the herd immunity level. I estimated we were around 72%, a couple of weeks ago. We are likely 3%-8% better especially if you consider the second wave of vaccinations taking place. So we are about to cross over a critical point to where it is much harder for the virus to spread. We should see the 'rona start to die down rather quickly. This site does a good job of tracking this kind of data: https://covid19-projections.com/path-to-herd-immunity/ ^They rejected the fear-mongering going on last year and I found their content refreshing.