The cruise ship departed Ushuaia, Argentina, in April with plans to ferry 147 passengers and crew members to some of the most remote places on earth, including Antarctica. But the ship, named the MV Hondius, had its voyage cut short by a rare virus that has killed three and infected several others.<\/p>\n
Hantaviruses are an ancient family of rodent-borne pathogens that likely caused disease in humans long before they first appeared in medical records in the 1950s. The viruses infect people via rodent waste \u2014 often through the inhalation of dust containing trace amounts of the excreta. Andes hantavirus, the strain that gripped the MV Hondius on its polar cruise, is one of a few hantaviruses known to cause hantavirus pulmonary syndrome, a rare but often deadly illness.<\/p>\n
The Andes strain is also the only known hantavirus that can be transmitted human-to-human \u2014 a characteristic turning a rare rodent-borne infection into a multinational emergency, just a few years after the world was caught flat-footed by the COVID-19 pandemic.<\/p>\n
The good news is that the Andes hantavirus, while uniquely deadly, is likely nowhere nearly as transmissible as COVID-19. Nevertheless, the outbreak is illuminating the complexity of responding to infectious disease outbreaks as international cooperation on public health issues has become fractured and contentious \u2014 all while global pandemics are\u00a0only becoming more likely<\/a>\u00a0overall. A month before the first patients onboard the MV Hondius became symptomatic, Argentina\u00a0officially completed the process of withdrawing<\/a>\u00a0from the World Health Organization, joining the U.S. in leaving a global health alliance that exists in large part to coordinate responses to these very kinds of cross-border disease outbreaks.<\/p>\n The emergency also points to another growing challenge for global public health: Climate change is altering the rainfall, vegetation, and habitat conditions that influence rodent populations \u2014 changes that experts say\u00a0boost the odds<\/a>\u00a0that the pathogens these animals carry will spill over into human populations.<\/p>\n While the hantavirus\u2019s one-to-six-week incubation period means the outbreak could have originated in any of the passengers\u2019 home countries, a possible culprit is the ship\u2019s stop for a birding expedition near Ushuaia, which is home to a landfill that attracts rodents looking for food. Argentina\u2019s health authorities have already\u00a0documented a sharp rise in hantavirus this season<\/a>: 101 infections have been recorded since June 2025, about twice as many as there were in the same period a year earlier.<\/p>\n The country\u2019s health ministry hasn\u2019t yet determined what\u2019s behind the surge, but\u00a0research suggests<\/a>\u00a0that climate change may play a role. Argentina and neighboring countries in South America\u00a0endured years of severe drought<\/a>\u00a0between 2021 and 2024, including Argentina\u2019s worst dry spell in more than 60 years in 2023, followed by\u00a0extreme rainfall last year<\/a>. Weather extremes exacerbated by global warming change how rodents behave, according to Kirk Douglas, a senior scientist who studies hantaviruses and climate change at the University of the West Indies, Cave Hill, in Barbados.<\/p>\n Related Articles<\/p>\n Here is a list of articles selected by our Editorial Board that have gained significant interest from the public:<\/p>\n Prolonged drought sends rats and mice into populated areas in search of food, which can put people at higher risk of contracting the virus. Sudden rainfall following drought causes trees and shrubs to produce a windfall of nuts and seeds, which tend to benefit rodents and boost their numbers \u2014 all the while increasing the risk of transmission from animal to human.<\/p>\n That doesn\u2019t mean there\u2019s a one-to-one relationship between global temperature rise and rodent-driven risk, however, and climate change is hardly the only force at play. A complex web of natural and human-made landscape changes can increase or decrease contact between humans and rodents. Increased temperatures and humidity, for example, don\u2019t seem to influence the disease ecology of hantavirus in the same way that drought and precipitation do.<\/p>\n \u201cHantavirus is\u00a0sensitive\u00a0to the changes climate change will bring,\u201d Douglas emphasized. \u201cIt\u2019s all dependent on what the prevailing climate impact is.\u201d<\/p>\n That complexity makes hantavirus risk difficult to predict \u2014 and easy to overlook. In the United States, hantavirus has been rare since federal surveillance began in 1993. There were\u00a0fewer than 1,000 total confirmed cases up to 2023<\/a>, the latest year that data is available. About 35 percent of those cases, almost all of which occurred west of the Mississippi River, resulted in death.<\/p>\n As in South America, the dynamics of hantavirus in the U.S. may be shifting. The places most at risk, federal scientists reported in a\u00a0study published last year<\/a>, are dry landscapes where homes are spread out, many kinds of rodents live nearby, and communities may have fewer resources to prevent or respond to disease \u2014 conditions that describe broad swaths of the American West.<\/p>\n ** **<\/p>\n This\u00a0article by Grist<\/a>\u00a0is published here as part of the global journalism collaboration\u00a0Covering Climate Now (CCN).<\/a> It was authored by Zoya Teirstein<\/a>.<\/p>\n Editor\u2019s Note: The opinions expressed here by the authors are their own, not those of impakter.com \u2014 In the Cover Photo: The last passengers of the MV Hondius cruise ship depart for the airport from Granadilla Port in the Canary Islands on May 11, 2026. Cover Photo Credit: Andres Gutierrez \/ Anadolu \/ Getty Images via Grist<\/p>\n","protected":false},"excerpt":{"rendered":"The cruise ship departed Ushuaia, Argentina, in April with plans to ferry 147 passengers and crew members to…\n","protected":false},"author":2,"featured_media":450882,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10],"tags":[229483,8018,229484,390,229485,11414,3090,229486,167238,214227,134,111,139,69,1675],"class_list":["post-450881","post","type-post","status-publish","format-standard","has-post-thumbnail","category-health","tag-andes-hantavirus","tag-argentina","tag-ccn","tag-climate-change","tag-covering-climate-now","tag-extreme-weather","tag-global-warming","tag-grist","tag-hantavirus","tag-hantaviruses","tag-health","tag-new-zealand","tag-newzealand","tag-nz","tag-public-health"],"_links":{"self":[{"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/posts\/450881","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/comments?post=450881"}],"version-history":[{"count":0,"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/posts\/450881\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/media\/450882"}],"wp:attachment":[{"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/media?parent=450881"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/categories?post=450881"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/tags?post=450881"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}