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 festiva

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.