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The hygiene of cruise lines may be under scrutiny after a suspected outbreak of hantavirus<\/a> on a polar expedition vessel,\u00a0but passengers should be reassured that cases are rare. <\/p>\n At least three people have died aboard Oceanwide Expeditions\u2019 MV Hondius, which began a remote voyage from Argentina to Cape Verde on 1 April, carrying 147 passengers.<\/p>\n The World Health Organisation (WHO) said a total of seven hantavirus cases \u2013 two confirmed and five suspected \u2013 had been identified on the cruise ship<\/a> so far.<\/p>\n Three individuals will be medically evacuated in Cape Verde, while the ship will proceed to the Canary Islands: a voyage that is expected to take three days<\/a>.<\/p>\n Oceanwide Expeditions said there is no \u201cdefinitive disembarkation point\u201d for the remaining guests, but sailing on to Las Palmas or Tenerife is being considered, where further medical screening and handling could take place.<\/p>\n A statement from industry group, the Expedition Cruise Network, said ships undergo strict biosecurity measures.<\/p>\n It said: \u201cOur thoughts are with the passengers, crew, and families affected.<\/p>\n \u201cAs a member of the Expedition Cruise Network, Oceanwide Expeditions has our full support as they manage this situation.\u201d<\/p>\n Can you catch hantavirus on a cruise ship?<\/p>\n Despite the high-profile coverage, cases of hantavirus are rare. In fact, there are no other known cases of hantavirus being present on a cruise.<\/p>\n Hantavirus is mainly spread by contact with rodents or their urine, saliva or droppings, particularly when the material is disturbed and becomes airborne, posing a risk of inhalation. <\/p>\n The WHO says that while uncommon, hantaviruses may spread between people.<\/p>\n It is still unclear whether the outbreak began on board or via an excursion. Passengers have visited remote locations including Antarctica, South Georgia, Nightingale Island, Tristan da Cunha, Saint Helena and Ascension Island during the cruise.<\/p>\n Dr Maria Van Kerkhove, director for epidemic and pandemic preparedness and prevention at WHO,told BBC Breakfast: \u201cWe have a working hypothesis that there\u2019s probably a mixture of different types of transmission.<\/p>\n \u201cThis is also a boat that went to many different islands. They were looking at wildlife, they were looking at birds, and on some of these islands, there\u2019s rodents as well.<\/p>\n \u201cSo there could be a mixture of exposure to rodents in different places, but because some of the cases are close contacts, sharing cabins together, our assumption is that there\u2019s a bit of a mix.\u201d<\/p>\n Aside from this case, there is no public data on hantavirus outbreaks on other cruise ships.<\/p>\n A spokesperson for the Cruise Lines International Association (CLIA) said: \u201cWe are aware of reports regarding cases of hantavirus associated with a recent voyage on a non-member cruise line. <\/p>\n \u201cOur thoughts are with those affected. CLIA-member cruise lines are required to adhere to comprehensive health, safety and medical policies designed to detect, prevent and mitigate illness. Available public health data indicates that rates of illness on cruise ships are lower than in comparable land-based settings.\u201d<\/p>\n How common is norovirus on cruise ships?<\/p>\n While there are no known cases of hantavirus on other cruise lines, stomach bugs and norovirus<\/a> are more common concerns. <\/p>\n Norovirus is a highly contagious virus that causes acute gastroenteritis, leading to vomiting, diarrhoea, nausea and stomach pain.<\/p>\n In the US, the Centers for Disease Control and Prevention<\/a> (CDC) recorded 23 norovirus cases on cruise ships in 2025.<\/p>\n These figures only cover ships that visit an American port, so the actual numbers are likely much higher. <\/p>\n But with 30 million yearly passengers worldwide, the risk of becoming unwell is minimal. <\/p>\n In fact, data from the CDC suggests passengers are more likely to fall ill on land. Occurrences of gastrointestinal issues are one in 5,500 at sea, which accounts for around one per cent of all cases. <\/p>\n Will you get ill on a cruise?<\/p>\n With thousands of people congregating in a confined space, it is no surprise that people can get ill on a cruise.<\/p>\n This perception was compounded during the pandemic, when coronavirus cases escalated among hundreds of passengers on Diamond Princess<\/a> and the ship ended up quarantined in Japan for two weeks.<\/p>\n There have also been negative media portrayals in programmes such as HBO\u2019s The Last Cruise documentary<\/a>.<\/p>\n Despite the media coverage, CDC data suggests the most common settings for gastrointestinal illnesses are actually healthcare facilities followed by restaurants or catered events, schools and day care centres. <\/p>\n Nicky Kelvin, editor at large of travel tips website The Points Guy<\/a>, said: \u201cPassengers are not highly likely to become sick from hygiene-related causes on a cruise due to high standards of cleanliness, as well as rigorous inspections which have been implemented since 1970.<\/p>\n \u201cConcerns about norovirus on cruises<\/a> are a result of ships being required to report all cases of norovirus to authorities, compared with schools or nursing homes where norovirus is rampant but do not require reports.\u201d<\/p>\n How clean are cruise ships?<\/p>\n Cruise lines <\/a>follow the International Health Regulations of the WHO and the CDC\u2019s Vessel Sanitisation Program (VSP). Among the requirements is the need for passengers to complete health questionnaires before boarding. <\/p>\n The regulations require cruise ships to provide health declarations detailing illnesses of individuals on board to port authorities prior to docking. <\/p>\n Every cruise ship receives multiple inspections each year \u2013 announced and unannounced \u2013 to support implementation of strict environmental and safety regulations.<\/p>\n Under the VSP, ships must get 86 out of 100 points to pass, covering cleanliness of areas such as cabins, galleys and dining rooms, swimming pools and kids\u2019 clubs.<\/p>\n To comply with this, cruise ships <\/a>are routinely cleaned, with crew regularly sanitising surfaces such as tables, handrails, door handles and taps. Cruise passengers are reminded to wash their hands when entering the buffet and restaurants, while hand sanitisers are readily available in public locations. <\/p>\n CLIA members also follow guidelines specifying that ships must have at least one qualified medical professional permanently available for medical bay visits or cabin \u201chouse calls\u201d.<\/p>\n CLIA managing director Andy Harmer said: \u201cThe cruise industry\u2019s first priority is the health and safety of passengers, crew and the communities that we visit.<\/p>\n \u201cThanks to robust and rigorous protocols that cruise lines have put in place, cruise is one of the safest forms of travel. From cleaning practices that are often unparalleled in other settings to passenger screenings, cruise lines take extensive measures to keep their guests healthy.\u201d <\/p>\n What happens when there is an outbreak on a cruise?<\/p>\n If a passenger contracts norovirus or other contagious illnesses, they are usually quarantined in their cabin to prevent further spread of the illness.<\/p>\n