Passengers aboard Carnival Magic experienced vomiting and nauseous, the Coast Guard was told.
The 43-year-old man jumped from the ship as it was returning to Port Canaveral, Florida, from a trip through the Caribbean.
The agency had previously assessed cruise ships as containing a "high" or "very high" risk for COVID-19 transmission.
Footage of the damage the tornado caused in New Orleans has begun circulating on social media.
Royal Caribbean's new ship weighs over 200,000 tonnes and is 1,188 feet long. It has capacity for 6,988 guests and 2,300 crew members.
A 32-year-old woman went overboard from the Carnival Valor cruise ship about 150 miles offshore of Southwest Pass, Louisiana.
Before the Crystal Symphony cruise ship was rerouted to the Bahamas, a U.S. federal judge ordered its seizure amid a lawsuit over unpaid fuel bills.
I had two big cruise ship romances. They didn't happen on the same trip, but multiple romances happening on one trip isn't uncommon.
Thursday is the 10-year anniversary of the Costa Concordia shipwreck off the coast of a Tuscan island that killed 32 passengers and crew members.
Last week, the CDC recommended Americans avoid cruise ships because of the spike in COVID cases and the Omicron variant in recent weeks.
A Royal Caribbean cruise ship was forced to end the "cruise to nowhere" a day early after nine passengers on board were linked with a cluster of Omicron cases.
Officials said a third of all reported cases since the beginning of the pandemic were in the past month, and several are linked to an outdoor concert.
The health agency is recommending that even fully vaccinated people do not go on cruises because of concerns about the spread go the Omicron variant of COVID.
The CDC advised Americans to avoid cruises as COVID cases rise across the country, because Omicron could be highly transmissible in the confines of a ship.
The world's largest cruise trade association called the CDC's new guidance advising against cruise travel "perplexing" in a statement shared with Newsweek.
The U.S. cruise industry has only been reopened for about six months, with ships beginning to depart from Florida again in June after COVID-19 shutdowns.
An Italian court ruled that the Costa Crociere cruise line was liable not only for the shipwreck but for the traumatic experience that a passenger suffered.
The 15-year-old boy died aboard the MSC Seashore ship, which was returning to Miami after a five-day trip to the Caribbean.
In a tweet, Cassandra Basler said she was uninvited from her family's Christmas gathering for requesting COVID testing.
Ninety-eight percent of those who tested positive were vaccinated, and they have so far experienced only mild or no symptoms.
The woman is believed to have fallen from the fifth-floor balcony.
The cruise ship stopped in Honduras, Mexico and Belize with the 10 infected passengers.
"The guest almost certainly did not contract COVID on our ship," the cruise line said in a statement regarding a passenger who died from COVID complications.
The cruise line said in a statement that it was "managing a small number of positive cases on board" but did not disclose the total number.
Florida Governor Ron DeSantis signed a bill into law in May that prohibited businesses operating in the state from requiring proof of COVID vaccination.
"We are thinking of and grieving with the families of the five passengers and our dear friend and pilot aboard the aircraft," said the company that owned the sightseeing plane.
"Effective June 29, 2021, unvaccinated guests 12 and older departing on a Royal Caribbean International cruise from Florida are required to purchase travel insurance," a spokesperson for Royal Carribean wrote to Newsweek.
"Guests eligible but not fully vaccinated or able to show proof of vaccination will be subject to testing and additional health protocols at their own expense," the company said. "Children not eligible for vaccines will be subject to complimentary testing and health protocols."
The maiden cruise of Odyssey of the Seas, the line's newest vessel, has been pushed back to July 31 "out of an abundance of caution."