For starters, since we’ve been willing to evacuate Americans from Wuhan and hold them in quarantine here, we ought to have done the same for those Americans on board. Other countries should have stepped up for their citizens as well.
Anyone getting on a cruise since the threat was known should be on their own, but this was earlier on. But that ship is a certain petrie dish for spreading the virus at this point.
At the time this ship sailed, they didn’t know the virus was aerosolized either. We forget how new this all is, we are only two weeks out from the first case outside China. Stunning.