A more contagious mutation of the coronavirus may be what had landed in the U.S. and is causing all the deaths.
Scientists say a now-dominant strain of the coronavirus appears to be more contagious than original
If a mutation has happened once, it can happen again, and the hopes of creating a vaccine against a stable version of the coronavirus may be dashed.

We may be in for a very long wait until the world is entirely safe from this thing.