The United States’ Centres for Disease Control (CDC) has revealed that 21 cruise ships with a US port of call suffered at least one incidence of Coronavirus onboard in the four weeks prior to the global shutdown of the cruise industry.
The report by the CDC shows that 21 cruise ships from nine cruise lines, many of them homeporting in the US, but some of them also only calling in the US, were affected by the virus.

Cruise ships docked in Miami
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The list includes direct and indirect infections with passengers who also showed symptoms after disembarking their cruise.
The list doesn’t include cruise ships that suffered outbreaks in international or foreign waters, such as Diamond Princess in Japan and Holland America’s Zaandam off South America (which was recently allowed to disembark guests in Florida).
Coral Princess was also sailing a South American voyage at the time of her outbreak and was allowed to dock in Miami last week. She was also not included on the list.
Princess Cruises has been particularly hard-hit by the outbreak, with four of its ships being hit by outbreaks in the early stages of the virus’ spread globally, it began with Diamond Princess, then Grand Princess and Crown Princess in the US, and finally Coral Princess off South America.

Diamond Princess was placed under quarantine when passengers tested positive for Coronavirus
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The list of US-cruising ships hit by Coronavirus outbreaks was released part of new health guidance from the CDC specifically for cruise lines.
It includes new rules for cruise lines getting passengers and crew safely back to their home countries and essentially requires that cruise lines charter in-bound and out-bound flights and busses.
There are separate requirements for those that are well and those who are ill and needing further medical care. All the details can be found on the CDC web site.
Here is the list which also includes the different itineraries impacted:
Ship name Voyage Start Date Voyage End Date Carnival Imagination 5-Mar 8-Mar Carnival Valor 29-Feb 5-Mar Carnival Valor 5-Mar 9-Mar Carnival Valor 9-Mar 14-Mar Carnival Vista 15-Feb 22-Feb Carnival Vista 29-Feb 7-Mar Celebrity Infinity 5-Mar 9-Mar Celebrity Eclipse* 2-Mar 30-Mar Celebrity Reflection 13-Mar 17-Mar Celebrity Summit 29-Feb 7-Mar Crown Princess 6-Mar 16-Mar Disney Wonder 28-Feb 2-Mar Disney Wonder* 6-Mar 20-Mar Grand Celebration 22-Feb 24-Feb Grand Princess 11-Feb 21-Feb Grand Princess* 21-Feb 7-Mar MSC Meraviglia 1-Mar 8-Mar Norwegian Bliss* 1-Mar 8-Mar Norwegian Bliss 8-Mar 15-Mar Norwegian Breakaway 29-Feb 7-Mar Norwegian Breakaway* 7-Mar 14-Mar Norwegian Pride of America* 29-Feb 7-Mar Oceania Riviera* 26-Feb 11-Mar Explorer of Seas 8-Mar 15-Mar Liberty of the Seas* 15-Mar 29-Mar Majesty of the Seas* 29-Feb 7-Mar Oasis of the Seas* 8-Mar 15-Mar Symphony of the Seas* 7-Mar 14-Mar *CDC was notified about COVID-19-positive travelers who had symptoms while on board these ships. For all other ships, CDC was notified about travelers who had symptoms and tested positive for COVID-19 within 14 days after disembarking.
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