Skift Take
These voyages stand out for the particularly high percentages of ill passengers onboard, but the cases give no further insights into how to stop outbreaks from happening in the future.
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- Over a quarter, or 28.9%, of passengers fell ill on the National Geogrpahic Sea Lion ship operated by Lindblad Expeditions. The percentage was so high due to the small number of passengers onboard: 17 of 61 travelers became ill onboard.
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- A quarter of all passengers fell ill onboard Fred Olsen’s Balmoral cruise ship. Two hundred and thirty-eight of 1,163 total passengers fell ill during the 30-day voyage.
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- Almost a quarter, or 22%, of all passengers fell ill on Celebrity Cruises’ Mercury ship. That happened twice in 2010. The first time 293 of 1,163 cruise fell ill on a 30-day journey. The second time 411 of 1,833 cruisers fell ill on an 11-day trip.
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- Another 22.2% of passengers fell ill on Holland America’s Ryndam cruise ship. That’s 272 of 1,223 total passengers on a 16-day journey. Twelve outbreaks have occurred on the Ryndam, the most on any one ship in the cruising industry.
There have been multiple norovirus outbreaks on cruise ships over the last month, but how big of a concern is this for potential cruisers?
In the past ten years, only nine cruise virus outbreaks have caused more than 20 percent of passengers to become ill. This according to data reported the CDC.
The worst case was in 2008 onboard the American Canadian Cruise Grand Caribe when almost half, or 43 percent, of passengers became ill.
There were only 63 passengers onboard which explains the high percentage, but no other outbreak in the past twenty years has crossed the 30 percent threshold in that time period.
There were less than 150 passengers onboard during four of nine worst outbreaks, leading to shockingly high percentages.
However, it’s the outbreak was likely even more evident since passengers more easily noticed how many of their fellow cruisers became ill.
Double Trouble
Two of the worst cruise ship outbreaks in the past decade happened onboard Celebrity Cruises Mercury.
Approximately 22 percent of passengers fell ill on the ship on two separate voyages in 2010. The first time 293 of 1,163 cruisers were reported ill on a 30-day journey. The second time 411 of 1,83 cruisers were reported ill on a 11-day trip.
Below is statistics on the nine cruisers where more than 20 percent of passengers fell ill during a virus outbreak:
| Year | Cruise Line | Ship | Cruisers Reported Ill (%) | Cruisers Reported Ill (#) | Total Cruisers (#) | Cause | Length of Voyage |
|---|---|---|---|---|---|---|---|
| 2008 | American Canadian Cruise Line | Grande Caribe | 43% | 29 | 68 | Norovirus | 12 |
| 2011 | Lindblad Expeditions | National Geographic Sea Lion | 28.87% | 17 | 61 | Unknown | 7 |
| 2010 | Fred Olsen Cruise Lines | Balmoral | 25.19% | 293 | 1163 | Unknown | 30 |
| 2010 | Celebrity Cruises | Mercury | 22.43% | 411 | 1833 | Norovirus | 11 |
| 2007 | Cruise West | Spirit of Nantucket | 22.22% | 8 | 36 | Unknown | 7 |
| 2005 | Holland America Line | Ryndam | 22.2% | 272 | 1223 | Norovirus | 16 |
| 2010 | Celebrity Cruises | Mercury | 22.1% | 406 | 1829 | Norovirus | 11 |
| 2014 | Royal Caribbean Cruise Line | Explorer of the Seas | 20.6% | 634 | 3071 | Unknown | 10 |
| 2003 | Windjammer Barefoot Cruises | Legacy | 20.54% | 22 | 107 | Specimens not obtained | 7 |
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Photo credit: The Royal Caribbean International's Explorer of the Seas is docked at Charlotte Amalie Harbor in St. Thomas, U. S. Virgin Islands, Sunday, Jan. 26, 2014. 122606 / 122606