The World Health Organization (WHO) has indicated that the public risk associated with hantavirus remains low, despite concerns arising from a rare yet deadly rodent-borne virus reportedly linked to a fatal outbreak aboard a cruise ship near the Cape Verde Islands. Dr. Tedros Adhanom Ghebreyesus, the Director-General of the WHO, addressed this issue during a briefing held on Thursday morning, marking the first dedicated update from the agency since the outbreak was confirmed earlier in the week.
According to Dr. Tedros, there are currently eight suspected cases of hantavirus, which include five confirmed infections. Tragically, three individuals have died, and one person is in critical condition. The WHO's briefing took place amidst efforts by international health agencies to track infections, investigate how the virus is transmitted, and reassure traveling individuals following a cluster of illnesses that left multiple people hospitalized and stranded passengers from over 20 countries.
The cruise ship at the center of the situation, the MV Hondius—registered in the Netherlands—was quarantined near the remote island of St. Helena. This quarantine was enacted after several passengers began exhibiting symptoms such as fever, gastrointestinal issues, and rapid respiratory distress. Reports suggest that the first passenger who became infected may have contracted hantavirus before boarding the ship; this case was first documented on April 6, prior to the outbreak being reported.
The MV Hondius was carrying a total of 147 passengers and crew hailing from 23 different countries, including four Canadians. However, Global Affairs Canada reported that none of the Canadians onboard were directly affected by the virus. Following the quarantine, the vessel is now en route to Spain's Canary Islands, where it is scheduled to dock in the coming days.
It is noteworthy that 30 passengers had previously disembarked the cruise ship at St. Helena on April 24, prior to the outbreak being officially recognized. Among these individuals were two Canadians who had left the ship before the severity of the situation became apparent.
While hantavirus is not a new virus, it is indeed rare and poses significant health risks. The infection can result in hantavirus pulmonary syndrome, a severe respiratory illness that may lead to fluid accumulation in the lungs, respiratory failure, and even shock. Currently, there is no specific antiviral treatment for hantavirus, and severe cases generally require intensive supportive care.
Transmission typically occurs when individuals inhale particles from rodent droppings or urine, which is often found in enclosed areas such as cabins, sheds, barns, and forests where rodents tend to nest. Importantly, human-to-human transmission remains exceptionally rare, having only been documented in limited circumstances involving specific strains of the virus.
Notably, in early 2025, the death of Betsy Arakawa, the wife of actor Gene Hackman, brought significant attention to hantavirus after she contracted the virus in their home in New Mexico. Her case is among the most widely recognized hantavirus incidents linked to a public figure, further highlighting the potential severity of this disease.
