The issue that I would have with the advice, whether or not it was obvious that the virus was a huge deal at the time, is that whether you get it isn't going to

The issue that I would have with the advice, whether or not it was obvious that the virus was a huge deal at the time, is that whether you get it isn't going to be an independent probability. If there's an outbreak on the ship, everybody gets it, regardless of what the overall odds are. I'm not sure why, but that seems psychologically more concerning to me. Kind of like the risk of a plane crash vs. a car crash.