A suspected hantavirus outbreak aboard a small cruise ship has drawn worldwide attention after three people died and several others became seriously ill.
Health experts say the outbreak is a reminder that although hantavirus infections are rare, they can become deadly very quickly.
The outbreak happened on the MV Hondius, a cruise ship carrying 147 passengers and crew members. The ship had traveled through remote regions including Antarctica and Ascension Island before becoming isolated near Cape Verde while health authorities investigated the illness.
Scientists and public health experts are now closely studying the outbreak because it may involve a rare form of person-to-person spread.
Hantavirus is mainly spread by contact with infected rodents or their urine, saliva, or droppings. The disease exists in many parts of the world, but different strains of the virus behave differently depending on the region.
The World Health Organization says hantavirus infections in the Americas are especially dangerous, with death rates reaching as high as 50% in some cases. In Europe and Asia, death rates are generally lower.
The research and medical information about the outbreak were discussed by experts from Northeastern University and reported alongside updates from the World Health Organization.
Neil Maniar, director of Northeastern University’s public health program, explained that people infected with hantavirus can become seriously ill very fast. Early symptoms often look similar to the flu, making the disease difficult to recognize at first.
Patients may develop fever, headaches, muscle pain, stomach problems, or diarrhea. However, the illness can suddenly become much more severe.
Joshua Merson, an expert in extreme medicine, said the real danger begins when the virus damages blood vessels. This can cause fluid to leak into the lungs, leading to severe breathing failure.
According to WHO reports, passengers on the ship experienced symptoms including fever, pneumonia-like illness, breathing problems, and gastrointestinal issues.
The first known patient was a Dutch passenger who became sick only days after the ship departed from Ushuaia in Argentina. He developed fever, headache, and mild diarrhea before his condition worsened into severe respiratory distress. He later died.
His wife also became ill soon afterward and later died in a hospital in South Africa after attempting to return home. A third passenger later developed symptoms and also passed away.
Several other people became seriously sick, including one patient who required evacuation to intensive care.
Health authorities suspect the outbreak may involve the Andes strain of hantavirus. Unlike most hantaviruses, Andes virus can sometimes spread directly from person to person.
This possibility has alarmed scientists because most known hantavirus infections occur only after contact with rodents.
Experts believe one passenger may have become infected during a shore excursion in South America and then spread the virus inside the closed environment of the cruise ship.
Even though hantavirus cases are rare, the disease is well known among doctors working in wilderness medicine and remote environments.
In the United States, only around 20 to 50 cases are reported each year. However, the illness can still be extremely dangerous. Some American cases develop into hantavirus pulmonary syndrome, also known as HPS, which causes serious lung damage.
The main U.S. strain is called Sin Nombre virus. It is carried by deer mice and is most common in western states.
People may become infected after breathing in tiny virus particles from rodent urine or droppings, especially in cabins, sheds, campsites, or buildings where rodents live.
Unlike Andes virus, the Sin Nombre strain does not spread between people.
The disease became widely known last year after the death of Betsy Arakawa, wife of actor Gene Hackman. Health officials later determined that she died from hantavirus pulmonary syndrome after possible exposure to rodent contamination.
Currently, there is no vaccine or specific cure for hantavirus.
Doctors mainly provide supportive treatment such as oxygen, IV fluids, blood pressure medication, ventilators, and in severe cases machines called ECMOs that help support heart and lung function.
Health experts say prevention is extremely important.
People are advised to seal buildings against rodents, safely clean areas contaminated by rodent waste, and avoid sweeping or vacuuming droppings because this can spread virus particles into the air.
Instead, experts recommend wearing gloves and masks while cleaning contaminated areas using wet cloths and disinfectants.
The cruise ship outbreak also highlights the challenges of managing infectious diseases in isolated environments such as ships, remote tourism areas, and wilderness travel.
Although scientists are still investigating the exact source of the outbreak, the incident shows how quickly rare diseases can spread and become deadly when people are in close contact.
The findings and public health investigations provide an important reminder that even uncommon infections can pose major risks when early symptoms are missed or mistaken for more common illnesses.
If you care about heart disease, please read studies that herbal supplements could harm your heart rhythm, and how eating eggs can help reduce heart disease risk.
For more health information, please see recent studies that apple juice could benefit your heart health, and results showing yogurt may help lower the death risks in heart disease.
Source: Northeastern University and World Health Organization.
