Cases is a meaningless stat, what are you finding from the deaths curve. Then take out NY/NJ and see what you have. There is a very good chance this virus went through a couple months ago and there is an immunity already.
Deaths on or about Easter are 29,718 for the US including NY/NJ. "Herd immunity" will take a 60 to 80 percent infection rate, depending on transmissibility. I'll be updating the curves tonight to start on the day of 100 deaths (3/17/20). THis should yield a tighter fit.
There is a very good chance this virus went through a couple months ago and there is an immunity already.
It may have done that in California even in the LA area.