Is hantavirus the next global threat? Fact-checking the outbreak with experts

A hantavirus outbreak on the cruise ship MV Hondius, operated by Oceanwide Expeditions, has raised global health concerns after the vessel departed from Ushuaia, Argentina, on April 1. The ship, carrying 147 passengers and crew, initially anchored off Cape Verde before sailing toward the Canary Islands for further investigation. As of May 8, 2026, eight confirmed cases have been reported, including the death of a 70-year-old Dutch male on April 11, five days after symptoms appeared. The outbreak has led to hospitalizations in multiple countries, including South Africa, the Netherlands, Switzerland, Singapore, and Spain. Some passengers had already disembarked and traveled home before the outbreak was identified, prompting international tracing efforts. The World Health Organization (WHO) has stated the global risk of spread remains low, as the virus is confined to a small group of travelers. Medical experts, including William Schaffner from Vanderbilt University and Monica Gandhi from the University of California, San Francisco, have emphasized that hantavirus spreads primarily through rodent exposure, not human-to-human transmission. Symptoms, which include fever, muscle aches, and respiratory issues, typically appear within weeks of exposure. The WHO continues to monitor the situation closely, while affected countries implement quarantine measures for exposed individuals. The ship initially alerted the WHO after the first case was detected, and authorities have coordinated with 22 countries to track passengers and assess potential risks. The European Centre for Disease Prevention and Control (ECDC) is also involved in evaluating the situation, though no widespread transmission has been observed to date.