Confirmed hantavirus infections linked to the MV Hondius cruise ship have risen to seven [1].

This outbreak raises international alarm because the virus is rare and the infections are appearing across multiple countries following a single voyage. The spread suggests a concentrated point of exposure on board the vessel, prompting investigations by the World Health Organization and national health agencies.

The latest cases include a French passenger and a U.S. citizen [1]. These individuals were identified after repatriation from Spain on Sunday, May 10 [2]. The MV Hondius began its journey on March 20, 2026 [4], departing from Ushuaia, Argentina. The vessel traveled to Tenerife, Spain, with various stops in Antarctica and other islands [5].

Reports on the total number of infections vary. While some sources confirm seven cases [1], other reports suggest the number of suspected infections may be as high as nine [2]. This higher estimate includes a woman who reportedly did not travel on the cruise [2]. Additionally, some reports indicate three people died among the suspected cases [3].

The ship carried a total of 147 people [7], consisting of 88 passengers, and 59 crew members [6]. Health authorities are now working to determine how the virus was introduced to the ship and why certain individuals became infected during the transit.

The investigation remains active as officials track the movement of passengers and crew. Because hantavirus is typically transmitted through contact with infected rodents, investigators are examining the sanitary conditions and cargo of the vessel. The coordination between Spanish, French, and U.S. health officials is critical to preventing further transmission as repatriated passengers return to their home countries [1].

“Confirmed hantavirus infections linked to the MV Hondius cruise ship have risen to seven.”

The emergence of hantavirus in a cruise ship environment is highly unusual, as the virus typically requires direct contact with rodent excreta in rural or wild settings. The fact that cases are appearing in France and the U.S. after a voyage starting in Argentina suggests a potential failure in onboard pest control or an environmental exposure at one of the remote stops. This incident may lead to stricter health screenings for expedition cruises visiting isolated regions like Antarctica.