so, has the spread in the U.S. been exponential or simply geometric with a steep slope .... inquiring minds want to know if you’ve fitted the data to a time curve to be able to make that “exponential” claim, at least for the U.S. ...
You seem to be an expert why don’t you show me your data and calculations.
I’ll show you mine for Italy: 20 raised to exponent 3 is 8000 in just over two weeks.