The Centers for Disease Control and Prevention has updated its guidance for travelers who are at increased risk for severe illness from COVID-19 to recommend they avoid cruise ships, regardless of vaccination status. The new guidance applies to older adults, people with certain medical conditions and pregnant and recently pregnant people. Prior to Friday’s announcement, the agency recommended that only people who were not fully vaccinated against COVID-19 avoid cruise ships. 

The change comes as the U.S. faces its fourth wave of COVID-19, driven by the delta variant. As of Friday, the country has reported 987,417 new cases and 6,037 virus-related deaths in the past week, according to data from Johns Hopkins University.  The CDC's website says the virus that causes COVID-19 can spread easily between people in close quarters on ships, and the chance of getting COVID-19 on cruise ships is “high.” COVID-19 outbreaks have been reported on cruise ships in recent months, despite various testing and vaccination requirements among cruise lines. 

In July, four vaccinated adults and two unvaccinated children tested positive for COVID-19 on a Royal Caribbean ship that had required passengers 16 and older to be fully vaccinated against COVID-19 and all passengers to receive a negative test before boarding. Last week, 27 people – 26 of whom were crew members – tested positive for COVID-19 on Carnival Cruise Line's Carnival Vista ship. More than 99% of crew members were vaccinated on the ship and 96.5% of passengers were vaccinated, according to the Belize Tourism Board. 

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