Recent reports highlight infectious-disease outbreaks on cruise ships, including norovirus-related gastroenteritis investigations and a rare hantavirus illness linked to cruise travel. Coverage across outlets points to a common set of conditions that make spread easier at sea: large numbers of passengers from different countries sharing the same ship for days or weeks; extensive use of indoor spaces with ventilation constraints; and repeated interactions through common areas such as dining facilities and entertainment venues. Several sources also note that many cruise passengers are older, which can increase vulnerability to severe illness and reduce immune protection against infections that circulate seasonally. Shore excursions add another pathway, potentially bringing infections acquired on land back aboard. The reports also describe that some outbreaks are linked to failures in ship management, including issues with food safety and water systems that can contribute to illnesses such as Legionnaires’ disease. While experts say risk cannot be fully eliminated, the sources collectively stress prevention measures and awareness because outbreaks can involve multiple pathogens, not just one disease. Past examples cited include norovirus, flu, E. coli and varicella, and the COVID-19 outbreak on the Diamond Princess in 2020.
Why cruise ships see frequent outbreaks of norovirus, hantavirus and other infections
Recent reports highlight infectious-disease outbreaks on cruise ships, including norovirus-related gastroenteritis investigations and a rare hantavirus illness linked to cruise travel. Coverage across...
- Cruise ships can facilitate outbreaks because many people from different locations share the same environment for days or weeks.
- Common factors include indoor crowding and limited ventilation, which can increase the spread of respiratory and gastrointestinal infections.
- Passengers are often older and may have underlying health conditions that raise the risk of severe disease.
- Outbreaks may be worsened by ship management issues, including food safety problems and water system or pool/spa maintenance.
- Reported outbreaks involve infections such as norovirus (gastroenteritis) and rare hantavirus, and past incidents have included diseases like COVID-19, flu, Legionnaires’ disease and other pathogens.
It is hardly a surprise that outbreaks can occur and experts say many of the factors involved are not easy to changeIt was a voyage that promised such stuff as dreams are made of, yet within weeks the Atlantic expedition of the MV Hondius had become a nightmare, with three passengers dead from hantavirus and more showing symptoms.Meanwhile, an outbreak of norovirus is under investigation on another cruise ship, while flu, E coli and varicella – the virus that causes chickenpox – have also caused problems in such settings. Perhaps most memorably, in 2020 the Diamond Princess became a breeding ground for Covid, with passengers and crew quarantined for two weeks off the coast of Japan and more than 700 of the 3,711 people onboard eventually testing positive. Continue reading...
3 months agoA recent outbreak of deadly hantavirus, a disease usually spread via rats, has been tied to cruise ship travel by the World Health Organisation. And France confined over 1,700 people to a cruise ship after a suspected norovirus outbreak occurred on board, though passengers have since been released.The thought of being stuck on a ship filled with a contaqgious virus is a pretty scary one. But how likely is it? We asked Professor of Medicine in Norwich Medical School, Prof Paul Hunter (whose research interests include the spread of infectious disease), whether and why cruise ships might be a hotbed for illnesses.“Cruises are well known to be associated with outbreaks [of] infectious disease” Professor Hunter told HuffPost UK that there’s a long-established link between cruise ships and the spread of infectious disease.America’s Centre for Disease Control and Prevention (CDC) Yellow Book said the form of travel “presents a unique combination of health concerns”.Most commonly, Prof Hunter said, these diseases include norovirus and the ’flu.But outbreaks can include “a range of other infectious diseases, including Covid-19, Legionnaires’ disease [a very serious, and sometimes fatal, lung infection] and RSV [respiratory syncytial virus, especially dangerous for babies]”. Why are cruise ships such hotbeds of disease?“There are many reasons,” Prof Hunter shared. “First, you bring together a large number of people from all over the world for a period of one or more weeks in an environment that is largely indoors.” It is easier for many diseases to spread indoors, especially where ventilation is poor.Then, there’s the fact that most cruise passengers are over 50. “The average age is often older than the general population, and many people may have a pre-existing medical disease that increases their vulnerability,” said Prof Huntr. “Some of that population may live relatively socially isolated lives at home, having retired from work, and so have had less of a chance to be exposed to circulating virus infections and so have lower immunity.” Shore visits can heighten risk, too, as these “may expose people to infections that they then bring back on board”. Lastly, “Some outbreaks have been due to failures in ship management, such as food poisoning. Faulty plumbing/pool management could lead to Legionnaires’ disease. For example, one outbreak of Legionnaires’ disease was linked to a whirlpool spa.” Related...What A GP Wants You To Know About Hantavirus, From Symptoms To UK RiskNorovirus Is Rife Right Now – This Is Why Some People Might Get It Worse Than OthersThe Ultimate Essentials For Travelling With Kids During The Holidays
3 months agoIn the span of two weeks, the MV Hondius incident and an outbreak of gastroenteritis on board a cruise ship off the coast of Bordeaux, some people might be tempted to postpone their cruise. But what makes these mastodons such fertile ground for infection? Story by France 2 and Antonia Kerrigan.
3 months agoRecent outbreaks of norovirus and rare hantavirus infections on cruise ships raise concerns about the spread of infectious diseases in confined travel environments.
3 months agoCruises are sold as floating vacations, but they are also useful for understanding public health.
3 months agoCruises are sold as floating vacations, but they are also useful for understanding public health.
3 months ago
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