Well, only because you asked!!!!
I really am not wishing to fuel this whole 'debate' any further...
a quote here - "Passengers sick for 4 days and could not stand."
Sounds potentially serious to me... IMHO
Also, as mentioned: young children at risk for dehydration... Believe me, more small children are hospitalized for this than you realize! How about the elderly, or anyone else who may not be in the very very best of health. Imagine not being able to hold down very essential medications for up to 4 days. ( Note: I am not talking about people with life threatening health problems, like cancer patients etc... Just regular people.)

Okay, a little humor here
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Newsflash.... Newsflash (background music, etc...)
NewsAnchor - "We have a breaking story about sickness on a cruise ship. Let's go to our reporter on the scene - our correspondent, Cant Getfacts
"Cant Getfacts - Reporting from Cape Canaveral here... The CDC has been called out, as several cruise ship passengers on HAL/Disney have reported common colds, seasickness, and indigestion from the rich fare served on the cruise ships!!! Several cruise ship passengers were flown home, at the cruiselines expense, halfway through one HAL itenerary... HAL has now cancelled the next cruise, and Disney is (considering) doing the same. This looks to be a serious situation."
"As you can see by this footage, ( Showing CDC officials scurrying around with test equipment, clipboards, etc.... Camera pans over to show workers in protective gear spraying and disinfecting every possible surface....) This whole ship is being sanitized from top to bottom.... Let's talk with one of the head CDC officials here and see what he can tell us... Here is Mr. Cy N. Tiffic, of the CDC."
Cy N. Tiffic: "Well, Cant, As you can tell, there is an outbreak here, and we are taking this very seriously. We are taking every possible measure to identify the origin of this common cold, and seasickness and indigestion, and to completely eradicate it."
Cant Getfacts: "Yes, we can certainly see that. This appears to be serious concern for future cruise ship passengers. They are scared of risking exposure to this common cold, seasickness, etc... Will this take care of the problem?"
Cy N. tiffic: "Oh, we certainly hope so. I was also involved in the investigation on the previous ship, and we have been unable to eliminate the problem as of yet. Out of the dozens of cruise ships afloat, these two cruise ships are currently the only two to be affected. And, we hope to keep it that way. Otherwise, this thing could spread very very quickly, and next thing you know common colds and seasickness and indigestion could be found on cruise ships everywhere!!
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Okay... like I said... a little humor here!!!
Maybe we should start to focus this thread more on the current situation, and where it goes from here????