Image Credits: Image Title: What You Need to Know About Hantavirus Amid Growing Concern Over Cruise Ship Outbreak. Source: (chatgpt.com) Date: May 2026. Attribution: This image was created using AI-generated imagery (chatgpt.com) by Open Chronicle and does not depict a real-world scene.
By Open Chronicle with agencies
A rare but potentially deadly disease linked to rodents has come under renewed global attention after a suspected hantavirus outbreak aboard the expedition cruise ship MV Hondius resulted in three deaths and several additional infections.
The incident has sparked concerns among health authorities and raised public questions about how hantavirus spreads, how dangerous it can become and why experts are monitoring the situation closely.
What Is Hantavirus?
Hantavirus refers to a group of viruses primarily carried by rodents and transmitted to humans through contact with contaminated urine, saliva, or droppings.
The virus most commonly spreads when people inhale airborne particles released from dried rodent waste in enclosed or poorly ventilated spaces.
According to the Centers for Disease Control and Prevention, hantaviruses can cause two major illnesses.
The first is hantavirus pulmonary syndrome, a severe respiratory disease that affects the lungs and can lead to respiratory failure.
The second is hemorrhagic fever with renal syndrome, which primarily attacks the kidneys and may cause internal bleeding, dangerously low blood pressure, and acute kidney failure.
How Does It Spread?
Human infection usually occurs after exposure to infected rodents or contaminated environments such as cabins, sheds, storage buildings, or rural homes where rodents are present.
The World Health Organization says human-to-human transmission is extremely rare, although the Andes strain found in parts of South America is one of the few known variants capable of limited person-to-person spread through prolonged close contact.
Paul Griffin told Australian media that between 150,000 and 200,000 hantavirus infections are identified worldwide each year, though direct transmission between people remains uncommon.
Symptoms Can Resemble Flu
One of the major challenges with hantavirus infections is that early symptoms often resemble influenza or COVID-19, making early diagnosis difficult.
Sonja Bartolome said early-stage hantavirus symptoms can be almost indistinguishable from the flu.
Initial symptoms often include fever, chills, headaches, muscle pain, and fatigue.
In cases involving hantavirus pulmonary syndrome, symptoms can appear one to eight weeks after exposure and may rapidly worsen as fluid accumulates in the lungs, leading to severe breathing difficulties.
The kidney-related form of the disease can trigger internal bleeding, kidney damage, and shock.
How Dangerous Is It?
Fatality rates vary depending on the strain involved.
The CDC estimates that hantavirus pulmonary syndrome is fatal in roughly 35% of cases, while hemorrhagic fever with renal syndrome has mortality rates ranging from 1% to 15%.
There is currently no specific cure or antiviral treatment for hantavirus infections.
Patients are generally treated with supportive medical care, including oxygen therapy, mechanical ventilation, and dialysis in severe cases.
Health experts stress that early medical intervention significantly improves survival chances.
Cruise Ship Outbreak Raises Questions
The latest outbreak linked to the MV Hondius has intensified international concern because of the possibility of limited human transmission involving the Andes strain.
The ship departed from Ushuaia before multiple passengers became ill during the voyage.
Health authorities believe initial exposure may have occurred during excursions or contact with infected rodents before the virus spread among close contacts aboard the vessel.
The WHO has stated that the overall global risk remains low and that the outbreak does not resemble the transmission dynamics seen during the COVID-19 pandemic.
Other Recent Cases
Public awareness of hantavirus increased significantly in 2025 following the death of Betsy Arakawa in Santa Fe.
An autopsy later confirmed she had died from hantavirus pulmonary syndrome.
Investigators reportedly found signs of rodent activity on the property, which may have been the source of infection.
Prevention Remains Key
Health authorities continue to emphasize that preventing contact with rodents is the most effective protection against hantavirus.
Experts recommend using gloves and bleach-based disinfectants when cleaning rodent droppings and avoiding sweeping or vacuuming contaminated areas, since doing so can release infectious particles into the air.
Public health officials also advise ensuring good ventilation in enclosed spaces and taking precautions in cabins, rural properties, and storage areas where rodents may be present.
Although many questions about hantavirus remain unanswered despite decades of research, experts stress that the disease remains rare and that prompt medical care can significantly improve outcomes.