Originally Posted by
STS-134
I'd categorize that as doing the right thing for the wrong reason. And that lack of any sort of mandatory quarantines on US citizens flying the same routes Chinese citizens were banned from taking made it effectively useless (if it was doing the right thing for the right reason, it would have been followed up with mandatory quarantines).
It didn't matter in the end though, as all the lineages from China direct died out. Only the one that came via Europe survives today.