The U.S. Centers for Disease Control and Prevention says that thousands of cruise passengers on more than 20 ships may have been exposed to coronavirus between February and March.
The agency published a list on its website of 28 sailings on 21 ships that dealt with coronavirus. The list, made public over the weekend, included some of the industry's biggest ships, including two Royal Caribbean ships, Symphony of the Seas and Oasis of the Seas, and MSC Cruises' Meraviglia, all of which can carry 4,500 or more passengers.
The following lists include only cruises that made port calls or disembarked in the U.S. International voyages that did not make stops at any American ports are not included because they are not under CDC jurisdiction.
Cruises where passengers became symptomatic while on ships
The CDC was notified that passengers who were symptomatic while onboard the following sailings have since tested positive for COVID-19.
Included in this list is the Feb. 21-March 7 sailing of Princess Cruises' Grand Princess, which docked in Oakland, California, two days after it was due to disembark in San Francisco. At the time, the ship had 21 positive cases. Since then, at least 103 have tested positive and two have died.
Celebrity Eclipse (March 2-30)
Disney Wonder (March 6-20)
Grand Princess (Feb. 21-March 7)
Norwegian Bliss (March 1-8)
Norwegian Breakaway (March 7-14)
Norwegian Pride of America (Feb. 29-March 7)
Oceania Riviera (Feb. 26-March 11)
Royal Caribbean: Liberty of the Seas (March 15-29)
Royal Caribbean: Oasis of the Seas (March 8-15)
Royal Caribbean: Symphony of the Seas (March 7-14)
Cruises where passengers became symptomatic or tested positive after disembarkation
The CDC said passengers on the following cruises became symptomatic and tested positive for COVID-19 within 14 days after disembarking. This means other sources of transmission cannot be ruled out:
Carnival Imagination (March 5-8)
Carnival Valor (Feb. 29-March 5)
Carnival Valor (March 5-9)
Carnival Valor (March 9-14)
Carnival Vista (Feb. 15-22)
Carnival Vista (Feb. 29-March 7)
Celebrity Infinity (March 5-9)
Celebrity Reflection (March 13-17)
Celebrity Summit (Feb. 29-March 7)
Crown Princess (March 6-16)
Disney Wonder (Feb. 28-March 2)
Grand Celebration (Feb. 22-24)
Grand Princess (Feb. 11-21)
MSC Meraviglia (March 1-8)
Norwegian Bliss (March 8-15)
Norwegian Breakaway (Feb. 29-March 7)
Royal Caribbean Explorer of the Seas (March 8-15)
On March 13, the member lines that comprise the Cruises Lines International Association agreed that they would suspend operations for 30 days. Some lines have stopped for longer than that, including Princess Cruises, which ceased operations for 60 days, and Viking, which said it would not sail until May 1.
Other lines who signed on for the original 30-day suspension have since extended theirs, such as Disney Cruise Line, which announced Monday that it has canceled all sailings through April 28.
This article originally appeared on USA TODAY: Coronavirus: Cruise passengers on these ships may have been exposed