One needs only to study the "Spanish Flu" of 1918 to understand how this is going to spread everywhere, and will also probably die away before we can discover and implement effective treatments or vaccines
In that epidemic, one midwestern US town which was surrounded by this flu took the extraordinary step of placinjg around-the-clock armed citizens at every road into town, turning away everyone at a distance. Everyone except the mailman that is. Yes, you guessed right- the mailman was infected and soon that town was also in trouble along with everyone else
Be it ship, plane, bus, or train when you cram that many people into that small of an area any contagious diseases are almost certain to find their way to at least some other travelers. Quarantines effective enough to prevent the spread are impractical and would not be tolerated by most people anyway, plus they'd likely only delay the effects at best. And one must also consider that group quarantines will only mean that infections will likely pervade through the whole group instead of a few individuals alone
We simply can't quarantine thousands of people individually until the disease has completely run it's course through all of them.
I don't wish illness on anyone but we are human and we are (and always will be) susceptible to things like this, and that will never change
It seems to be part of nature, so some acceptance of our fate is necessary even as we seek means to make our lives better and healthier however we can. Our best defense is a personal one:
Stay as healthy as you can and do not go into society among people who might be infected any more than you absolutely must. It's not much but it's about all we can do really.
Phil