About
We post outbreaks when they meet both of the following:
Notes about the data
GI illness is a commonly used term for acute gastroenteritis (AGE). Reporting GI illness on cruise ships is important. When passengers and crew tell the medical center onboard about their symptoms, it helps GI outbreaks get detected quickly. This allows steps to be taken to limit the spread of illness. Medical staff evaluate symptoms to see if they meet our case definition for AGE:
- Three or more loose stools within a 24-hour period or what is more than normal for that person OR
- Vomiting along with one of the following symptoms: diarrhea, muscle ache, headache, abdominal cramp, or fever
Cruise ships are required to report these cases to us.
What case totals mean
Cases reported are totals for the entire voyage. It does not mean all people are sick at the same time, such as when they arrive or leave a port or ship.
Learn more
Learn how passengers can protect themselves with these tips for healthy cruising.
Find more information on VSP outbreak response.
Read our publication on cruise ship GI illness outbreaks during 2006-2019.
| Cruise Line | Cruise Ship | Sailing Dates | Causative Agent | Case Counts (Passengers) | Case Counts (Crew) |
| P&O Cruises | Arcadia | 12/29/2022-1/3/2023 | Norovirus | 84 of 1,986 (4.23%) | 10 of 818 (1.22%) |
| Silversea Cruises | Silver Moon | 12/21/2022-1/6/2023 | Unknown | 15 of 521 (2.8%) | 13 of 413 (3.15%) |
| Carnival Cruise Line | Carnival Splendor | 5/24/2022-5/31/2022 | Norovirus | 77 of 2,109 (3.65%) | 16 of 1,079 (1.48%) |
| Seabourn Cruise Lines | Seabourn Odyssey | 4/28/2022-5/19/2022 | Unknown | 15 of 380 (3.95%) | 5 of 347 (1.44%) |
| Viking Cruises | Viking Sea | 11/29/2021-12/13/2021 | Vibrio and E. coli | 116 of 640 (18.13%) | 4 of 404 (1.0%) |
| Royal Caribbean International | Grandeur of the Seas | 3/7/2020-3/19/2020 | Norovirus | 98 of 1,764 (5.56%) | 7 of 798 (0.88%) |
| Holland America Line | Westerdam | 3/1/2020-3/16/2020 | Unknown | 2 of 18 (11.11%) | 25 of 680 (3.68%) |
| Princess Cruises | Caribbean Princess | 2/16/2020-3/1/2020 | Norovirus | 240 of 3,039 (7.9%) | 19 of 1,162 (1.6%) |
| Princess Cruises | Caribbean Princess | 2/2/2020-2/16/2020 | Norovirus | 371 of 3,035 (12.2%) | 32 of 1,161 (2.8%) |
| Norwegian Cruise Line | Norwegian Joy | 11/8/2019-11/24/2019 | Unknown | 127 of 3,602 (3.53%) | 6 of 1,769 (0.34%) |
| Aida Cruises | AIDAdiva | 10/3/2019-11/13/2019 | Norovirus | 83 of 2,251 (3.7%) | 10 of 610 (1.6%) |
| Aida Cruises | AIDAluna | 9/28/2019-10/12/2019 | Norovirus | 85 of 2,166 (3.9%) | 10 of 612 (1.6%) |
| Aida Cruises | AIDAdiva | 9/5/2019-11/23/2019 | Norovirus | 117 of 2,055 (5.7%) | 8 of 610 (1.3%) |
| Carnival Cruise Line | Conquest | 9/7/2019-9/14/2019 | Norovirus | 17 of 3,241 (0.52%) | 35 of 1,158 (3.02%) |
| Oceania Cruises | Oceania Marina | 3/18/2019-4/5/2019 | Unknown | 36 of 1,066 (3.38%) | 4 of 763 (0.52%) |
| Princess Cruises | Island Princess | 2/8/2019-2/18/2019 | Norovirus | 101 of 2,193 (4.61%) | 9 of 905 (0.99%) |
| Viking Ocean Cruises | Viking Star | 2/7/2019-2/14/2019 | Norovirus | 36 of 904 (3.98%) | 1 of 461 (0.22%) |
| Viking Ocean Cruises | Viking Sea | 1/18/2019-1/28/2019 | Norovirus | 38 of 925 (4.1%) | 0 of 455 (0%) |
| Royal Caribbean International | Oasis of the Seas | 1/6/2019-1/13/2019 | Norovirus | 561 of 6,285 (8.91%) | 31 of 2,169 (1.45%) |