If that’s the case actually all the more reason to engage in herd immunity. Get around those who could possibly infect you and develop an immunity so it’s not a problem later.
Sooner or later you have to re-open. Is it better to re-open while your immune system is still good or wait longer as it gets less active every day you stay home and weakens?
It is very likely the Left coast has been exposed completely. Otherwise you would have dead homeless people all over the place if the models were anywhere in the ballpark. They are not even in Yellowstone Park.