I think a lot of the US cases don't have a clear chain of who got the virus from who, so there's probably a lot of people in the public at large who don't know

I think a lot of the US cases don't have a clear chain of who got the virus from who, so there's probably a lot of people in the public at large who don't know they're infected (hopefully they think they have a cold and are staying home). However almost all of the US deaths happened at the same nursing home, so I think it's too early to make generalizations about death rates.