[arcticbull]

If we, again, assume that 15% of the US has already had it (as in Gangelt), and that herd immunity kicks in at 60-70%, that means we'd expect to see another 45-55% of the population -- 147-179 million cases. If we actually isolate the vulnerable, basically nobody would die.

[DiogenesKynikos]

That would be an incorrect assumption. The Gangelt study is about one small town in Germany where there was a known superspreading event at the Carnival festival.

If 15% of the US had already been infected, then based on the Gangelt study, there would be 200 thousand deaths, and millions hospitalized with severe illness.

You're completely misreading the Gangelt study.