Royal Caribbean has postponed a cruise scheduled to set sail from Florida in July after eight crew members tested positive for COVID-19. A simulated cruise due later this month has also been postponed.

In a Facebook post, Royal Caribbean CEO Michael Bayley said the company had rescheduled the Odyssey of the Sea’s inaugural voyage after testing positive. The cruise was scheduled to depart Fort Lauderdale on July 3rd.

Bayley says the Odyssey’s 1,400 crew members received a vaccine dose on June 4th and should achieve a full vaccination by June 18th.

According to the Centers for Disease Control and Prevention, a person is not considered fully vaccinated until they are two weeks away from their last dose. Before the crew could achieve full vaccination, however, several members became infected with the virus.

On Tuesday, Bayley said eight members of the Odyssey crew came into contact with COVID-19 during routine testing. He added that only two crew members had “mild” symptoms; the rest were asymptomatic.

Bayley said the rest of the crew will be quarantined for two weeks and the company will continue with routine testing.

Bayley didn’t say when Odyssey would set sail. He added that “guests and travel companions will be notified and given multiple options for review”.

“Two steps forward and one step back!” Bayley wrote. “This is disappointing, but the right decision for the health and well-being of our crew and our guests.”

The delay comes less than a week after two guests on board the Celebrity Millenium tested positive for the virus Just a few days before the ship was due to return to the Caribbean island of St. Maarten for disembarkation.

The Millenium required all adult guests on board to provide proof of vaccination prior to boarding. CNN reports that 95% of 500 guests were vaccinated; the only guests allowed on board without a vaccination certificate were children.

Cruise ships emerged as early super-spreader events in the first few months of the COVID-19 pandemic. Hundreds of people fell ill on board the Diamond Princess in early 2020 and more than a dozen people died.

Florida has been pushing the federal government in recent months to resume the cruise industry, which has been idle since early 2020 amid the pandemic. In April, Florida’s governor has Ron DeSantis sued the federal government hoping to resume cruising in his state.