Pandemic restrictions on Florida-based cruise ships will remain in place after a US federal appeals court temporarily blocked a previous ruling that sided with a Florida lawsuit challenging the regulations. The ruling was the latest reversal in the battle between the state and federal regulators over whether cruise lines sailing from Florida ports can require passengers to be vaccinated before boarding.

The one-paragraph decision by a three-judge panel of the 11th US Circuit Court of Appeals was filed at 11:50 p.m. Saturday, just minutes before a Tampa judge’s previous ruling on the US Centers for Disease Control and Prevention restrictions was set to take effect.

The judges’ issuance of a temporary stay keeps the CDC regulations regarding Florida-based cruise ships in place while the CDC appeals the June decision by US District Judge Steven Merryday.

The lawsuit, championed by Gov. Ron DeSantis, claims that the CDC’s multiple-step process to allow cruising from Florida is overly burdensome, harming both a multibillion-dollar industry that provides some 159,000 jobs and revenue collected by the state.

In court filing, attorneys for Florida urged the 11th Circuit to reject the CDC request to keep its rules intact for now.

“The equities overwhelmingly favour allowing the cruise industry to enjoy its first summer season in two years while this Court sorts out the CDC’s contentions on appeal,” Florida’s lawyers argued.

The CDC, however, said keeping the rules in place would prevent future COVID-19 outbreaks on ships that are vulnerable to the spread of the virus because of their close quarters and frequent stops at foreign ports.

“The undisputed evidence shows that unregulated cruise ship operations would exacerbate the spread of COVID-19, and that the harm to the public that would result from such operations cannot be undone,” the CDC said in a court filing.

The CDC first flatly halted cruise ships from sailing in March 2020 in response to the coronavirus pandemic, which had affected passengers and crew on numerous ships.

Then the CDC on Oct. 30 of last year imposed a four-phase conditional framework it said would allow the industry to gradually resume operations if certain thresholds were met. Those included virus mitigation procedures and a simulated cruise to test them before embarking regular passengers.

Merryday’s decision concluded that the CDC can’t enforce those rules for Florida-based ships and that they should merely be considered nonbinding recommendations or guidelines. Several cruise lines have begun preliminary cruises under those guidelines, which the Tampa judge agreed with Florida are too onerous.

“Florida persuasively claims that the conditional sailing order will shut down most cruises through the summer and perhaps much longer,” the judge wrote in June, adding that Florida “faces an increasingly threatening and imminent prospect that the cruise industry will depart the state.”

The 11th Circuit’s brief decision did not include any opinions from the judges, which the panel said would be released later. The decision noted that one appeals judge dissented.

To date, cruises lines in Florida have been allowing unvaccinated passengers to cruise, but limiting their dining and activity options once aboard.