A new deadly disease called Hantavirus is currently spreading globally. The virus is carried by rodents that can cause severe disease in humans.
There has been a multi-country outbreak linked to a cruise ship, although global health authorities stress that the situation is not currently considered a pandemic-level threat. The outbreak, which involved passengers aboard the MV Hondius cruise vessel operating routes connected to Argentina and Antarctica, has resulted in several confirmed infections and deaths, prompting coordinated investigations and contact tracing efforts across multiple countries.
Health officials believe the cases are linked to the Andes strain of hantavirus, a rare variant found in South America that is notable because it is the only hantavirus known to occasionally spread from person to person through prolonged close contact.
How The Virus Spreads
Hantaviruses are carried primarily by rodents and are transmitted to humans through exposure to infected urine, saliva, or droppings. Infection most commonly occurs when contaminated particles become airborne and are inhaled, especially in enclosed or poorly ventilated areas such as cabins, storage facilities, farms, or abandoned buildings.
Activities including cleaning rodent-infested spaces, forestry work, farming, and sleeping in contaminated environments significantly increase exposure risk. Rodent bites can also transmit the virus, although this is less common. Despite heightened concerns surrounding the current outbreak, health authorities emphasize that the overwhelming majority of hantavirus infections worldwide still occur through contact with infected rodents rather than through human transmission.
Symptoms
Symptoms of hantavirus infection often begin one to eight weeks after exposure and initially resemble many common viral illnesses, making early diagnosis difficult. Patients typically develop fever, headache, fatigue, muscle aches, nausea, vomiting, and abdominal pain. In severe HCPS cases, symptoms can rapidly progress to coughing, difficulty breathing, fluid accumulation in the lungs, and shock. In HFRS infections, advanced illness may involve low blood pressure, internal bleeding, kidney failure, and circulatory collapse.
Because these symptoms overlap with diseases such as influenza, COVID-19, dengue, leptospirosis, viral pneumonia, and sepsis, doctors rely heavily on patient exposure history, including recent travel, occupational risks, and possible rodent contact.
Laboratory confirmation is usually carried out using antibody tests that detect hantavirus-specific IgM or rising IgG levels, while RT-PCR testing can identify viral RNA during the acute phase of infection. Due to the biohazard risks associated with handling infected specimens, laboratories processing hantavirus samples must operate under strict biosafety containment protocols. Health authorities continue to advise that all non-inactivated biological samples be transported using internationally recognized triple-packaging systems.
No Vaccine Yet
There is currently no licensed cure or universally approved vaccine for hantavirus infection. Treatment remains supportive and focuses on managing complications affecting the lungs, heart, and kidneys. Early hospitalization and access to intensive care significantly improve survival rates, particularly for patients suffering from hantavirus cardiopulmonary syndrome. Severe cases may require oxygen therapy, mechanical ventilation, circulatory support, or dialysis depending on the organs affected.
Public health agencies including the World Health Organization continue to stress that the current outbreak does not resemble the early stages of COVID-19 and that sustained global human-to-human transmission has not been observed. Investigations into the cruise ship cluster are ongoing, with researchers studying the genetic sequencing of virus samples to better understand transmission patterns
Prevention efforts remain focused on reducing human contact with rodents and contaminated environments. Recommended measures include sealing entry points in buildings, storing food securely, improving sanitation, avoiding dry sweeping of rodent droppings, disinfecting contaminated surfaces before cleaning, and practicing proper hand hygiene. In healthcare settings, standard infection prevention measures, including protective equipment and airborne precautions during aerosol-generating procedures, continue to be advised for suspected or confirmed cases.
