Two guests on board Royal Caribbean Cruises‘The Adventure of the Seas ship has tested positive for Covid-19 in routine tests and is now returning home, the company said on Thursday.

That comes after Two guests on Royal Caribbean’s Celebrity Millennium Cruise tested positive and the company Odyssey of the Seas was delayed from sailing after eight members of its crew tested positive.

Both guests were unvaccinated and under 16 years old. One guest is asymptomatic and the other has mild symptoms.

Other guests traveling with the two minors and guests who have come into close contact with them have all been vaccinated and tested negative, according to the company.

The guests and fellow travelers disembarked in the Bahamas and are on their way home to Florida.

According to Royal Caribbean, 92% of guests on the Adventures of the Seas ship are fully vaccinated, and the remaining 8% of guests are under 16 years of age. All crew members are fully vaccinated.

The CDC allowed cruises to return this year with strict safety protocols and requirements to prevent outbreaks from occurring on board several outbreaks on board ships in the past year.

The cruise industry is among the last to return to pre-pandemic surgery due to the Centers for Disease Control and Prevention’s strict guidelines.

Cruise ship stocks have fallen again after taking a major blow during the pandemic.

Royal Caribbean Cruises line stocks are up more than 16% this year, hitting a market cap of just over $ 22 billion.