Are we sure this ACE2 thing is more prevalent in Asian populations as well?  The only one I know about is a very small test group that I believe only contained one Asian male, and he had roughly 5 times the receptor sites than any of the whites or blacks. I don't know if that's been confirmed with more than that one Asian male.  But I do know that it's now confirmed to live and be viable on random 'surfaces' for up to 5 days. They just confirmed a guy caught the virus from a doorknob.