After years of decline, norovirus outbreaks surge on cruise ships

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After years of decline, norovirus outbreaks surge on cruise ships
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There have been 13 outbreaks of the highly infectious norovirus on cruises this year, according to the CDC. That’s the highest number of norovirus outbreaks on cruises recorded since 2012, with almost half of the calendar year left to go.

pre-pandemic levels and creating high-density environments that are ripe for transmission.

“They’re an enclosed population: a very large, compactly packaged population that’s together for long periods of time, often in really tight quarters,” he said. “So there are just very many opportunities for people to encounter each other … making it relatively easy for this virus to be transmitted.”

Although symptoms like diarrhea and vomiting often fade away in a few days, they can also cause dehydration. For older passengers who may make up a disproportionate number of cruise clientele, Schaffner warned, rapid fluid loss can create the risk of more serious illness. For people with diabetes, dehydration can throw off treatment strategies.

Schaffner also suspects that people feeling ill before boarding are now more inclined to set sail. Eager for vacation after a 2½-year pandemic delay, many could be bringing norovirus with them, he suggested.

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After years of decline, norovirus outbreaks surge on cruise ships | CNNAfter years of decline, norovirus outbreaks surge on cruise ships | CNNThere have been 13 outbreaks of norovirus on cruises this year, according to the US Centers for Disease Control and Prevention. That’s the highest number of norovirus outbreaks on cruises recorded since 2012, with almost half of the calendar year left to go.
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