By Aria Ellise, BDO Special Contributor
It seems like everyone is talking about the Hantavirus. There have been people questioning if it’s like the coronavirus that plagued us years back. Some say it’s just an over-hyped flu. But what’s the truth? Luckily, BlackDoctor has you covered.
Hantavirus is a rare but potentially deadly virus that is primarily spread by rodents, especially mice and rats. While infections are uncommon, health experts are paying closer attention after a recent international outbreak linked to a cruise ship raised concerns about possible imported cases in the United States.
The virus can cause a severe illness known as Hantavirus Pulmonary Syndrome (HPS), which attacks the lungs and can quickly become life-threatening if not treated early. Some forms of hantavirus found in Europe and Asia can also affect the kidneys.
How Hantavirus Spreads
Hantavirus is most commonly spread through contact with infected rodent urine, droppings, or saliva. According to the CDC, people usually become infected when tiny virus particles become airborne and are inhaled. This often happens when cleaning areas where rodents have nested, such as garages, sheds, attics, cabins, barns, or old storage spaces.
Other possible ways the virus can spread include:
Touching contaminated surfaces and then touching your mouth, nose, or eyes
Eating food contaminated by rodents
Rodent bites or scratches, though this is less common
Most hantaviruses do not spread from person to person. However, the Andes virus strain — primarily found in South America — has shown rare human-to-human transmission through prolonged close contact.
Symptoms to Watch For
One of the biggest dangers of hantavirus is that early symptoms can look like the flu, COVID-19, pneumonia, or even a bad stomach virus. Symptoms usually appear one to eight weeks after exposure.
Early symptoms often include:
Fever
Fatigue
Severe muscle aches, especially in the thighs, hips, back, and shoulders
Headaches
Chills
Dizziness
Nausea and vomiting
Diarrhea or abdominal pain
As the disease progresses, symptoms can suddenly become much more severe, including:
Shortness of breath
Persistent coughing
Tightness in the chest
Fluid buildup in the lungs
Rapid heartbeat
Difficulty breathing
Doctors warn that hantavirus is often confused with:
Influenza (flu)
COVID-19
RSV
Pneumonia
Bronchitis
Food poisoning or stomach viruses in the early stages
Because symptoms can escalate rapidly, early diagnosis is critical.
Why Hantavirus Can Be So Dangerous
Hantavirus Pulmonary Syndrome can become severe within days. In some cases, patients go from feeling flu-like symptoms to respiratory failure very quickly. The CDC notes that the disease can be fatal, especially if treatment is delayed.
There is currently no specific antiviral cure for hantavirus. Treatment mainly involves supportive hospital care, including oxygen therapy and intensive respiratory support.
The Latest Hantavirus Outbreaks
Recent attention around hantavirus intensified after an outbreak aboard the cruise ship MV Hondius in May 2026. The outbreak involved the Andes virus strain and resulted in multiple deaths and quarantines involving passengers from several countries, including the United States.
According to reports:
Multiple passengers aboard the ship became infected
At least three deaths were reported
Several Americans were quarantined upon returning to the U.S.
The CDC activated a Level 3 emergency response, though officials stressed the public risk remains low
The World Health Organization has urged countries to monitor for additional cases because the Andes virus strain has limited person-to-person transmission potential.
Although headlines may sound alarming, health officials emphasize that hantavirus is far less contagious than viruses like COVID-19 and usually requires close or prolonged exposure for transmission.
How to Protect Yourself
Health experts recommend reducing exposure to rodents and rodent-infested areas. Key prevention tips include:
Seal holes and entry points in homes and garages
Store food in rodent-proof containers
Avoid sweeping or vacuuming rodent droppings, which can send virus particles into the air
Use disinfectant sprays and gloves when cleaning rodent-infested spaces
Air out enclosed areas before cleaning
Anyone who develops flu-like symptoms after potential rodent exposure should seek medical attention immediately, especially if breathing problems begin.
