An outbreak of hantavirus aboard a cruise ship has led to three fatalities and several illnesses. The World Health Organization (WHO) is actively investigating the situation, confirming hantavirus in two cases.
The initial infected individual likely contracted the virus prior to boarding the ship. WHO officials emphasized that while investigations are ongoing, the overall risk to the global population remains low.
Understanding Hantavirus
Hantavirus is primarily transmitted through contact with rodents or their droppings. It poses a significant risk when contaminated materials become airborne, particularly in enclosed spaces.
While person-to-person transmission is rare, it can occur with specific strains, particularly the Andes virus found in South America.
We haven't had huge person-to-person spreads of hantavirus infection ever before and there's no reason to suspect a huge outbreak from this case at this point.
Steven Bradfute, University of New Mexico Health Sciences Center
Globally, hantavirus infections are uncommon. In the Americas, the WHO reported 229 cases and 59 deaths in 2025, with Argentina reporting 28 fatalities.
The United States began tracking hantavirus after a notable outbreak in 1993. Most cases occur in the Western states, particularly New Mexico and Arizona.
Symptoms and Risks
Hantavirus infections can start with flu-like symptoms such as fever and muscle aches. Serious complications can arise, including hantavirus pulmonary syndrome, which has a fatality rate of approximately 35%.
There is no specific cure for hantavirus, but early medical intervention can improve survival chances.
Preventative Measures
To reduce the risk of infection, it's crucial to limit contact with rodents and clean droppings safely using protective gear. Experts advise against sweeping or vacuuming, which can aerosolize the virus.
Research into hantavirus is ongoing, as scientists seek to understand its effects and improve treatment options.
Conclusion
As investigations continue, health experts stress the importance of understanding hantavirus transmission and prevention methods, especially in light of the recent cruise ship outbreak.