A couple years ago we were on a 10 day cruise to the Panama Canal. I came up with the flue about day 4 (no flue shot that year). Was stuck in room for most of trip. My fault. Also did not see ship MD for several days. He gave me this incredibel medicine that stopped the nausa. Cost was only $50 or so...wish I had seen him sooner. Anyway, symptoms to this virus sound just like my flu. No way to perdict or prevent (unless you got a flu shot and it was really flu). My point is...I could have been at home and sick or on vacation (ok so I was sick...not working). Don't worry, be happy. Also...leaving on Jan 5th for 7 days on Inspiration out of Tampa. Can't wait.