WHO probes suspected hantavirus outbreak aboard cruise ship, 3 dead
Three deaths, one confirmed case, and 149 people still aboard made a cruise ship hantavirus probe unusually urgent.
The central mystery is how hantavirus reached the MV Hondius, a Dutch-operated polar expedition ship, after three people died and WHO said one case had been confirmed with five more suspected. The virus usually spreads from infected rodents through urine, feces and saliva, with people most often breathing in contaminated particles, so a cluster aboard a passenger vessel moving across borders is a far rarer and more complicated setting than the disease’s usual pattern.
Cape Verde health authorities refused permission for the ship to dock in Praia as a precaution, leaving about 149 people still on board, including passengers from 23 countries and 17 Americans. WHO said it was facilitating the medical evacuation of two symptomatic passengers and conducting a full risk assessment, while also warning that the wider public risk remained low and that there was no need for panic or travel restrictions. The ship was said to be considering sailing on to Las Palmas or Tenerife in the Canary Islands.
The medical stakes are serious. WHO said one patient was in intensive care in South Africa in critical condition, and two crew members, one British and one Dutch, were said to need urgent medical care on board. Early hantavirus symptoms can resemble other respiratory illnesses, which can delay diagnosis, and the U.S. Centers for Disease Control and Prevention says hantavirus pulmonary syndrome can be fatal in nearly 4 in 10 infected people.
What makes the case especially sensitive for public health officials is the possibility of cross-border spread before the source is pinned down. WHO said it had informed National Focal Points under the International Health Regulations, the 2005 treaty for cross-border public-health events, and said a public notice would be issued. Its outbreak toolbox says suspected cases are defined by severe febrile respiratory illness, with confirmation possible through hantavirus-specific IgM testing, a fourfold rise in IgG, RT-PCR or immunohistochemistry.
Person-to-person spread is not the main concern for most hantaviruses in the United States, but it has been documented with Andes virus in South America, including a cluster in Argentina. That distinction matters now because the Hondius episode is unfolding in a confined travel environment, where one ill traveler can quickly become an evacuation problem, a port problem and a policy problem at the same time.
Know something we missed? Have a correction or additional information?
Submit a Tip
