There was just a thread about this same subject in the last few days, but for the life of me I can't find the darn thing. The short story is: it is still being brought on board by those that are already sick and don't know it. At least, I hope they don't know it. The Norwalk Virus just closed one of our local schools (I'm in Washington State) down for the last two weeks, it re-opens today. It's the worst year for Norwalk since the 1970's but it always peters out in the late spring and summer. Keep your hands washed, it can be airborne, take your echinachea (sp?) for at least a week before your cruise, try to keep your immunity up. You know, the winter basics. Have a great time!!!