It is not a new virus — scientists have known about hantaviruses for decades — but it is suddenly in the news because of a recent outbreak linked to a cruise ship carrying passengers from multiple countries.
Why is hantavirus in the news right now?
A cruise ship called the MV Hondius reported multiple hantavirus cases and deaths after traveling near South America and Antarctica. Health agencies and the WHO are now tracing passengers across several countries.
What made headlines more alarming is that the outbreak may involve the Andes strain of hantavirus, which is one of the very few hantavirus types that can sometimes spread from person to person through close contact.
That has triggered comparisons to early COVID-era news on social media, although experts currently say the overall public risk is low.
Common symptoms
Early symptoms often look like flu:
- Fever
- Headache
- Muscle pain
- Fatigue
- Nausea or vomiting
In severe cases, it can suddenly affect the lungs or kidneys and cause:
- Breathing difficulty
- Low blood pressure
- Organ failure
This severe lung form is called Hantavirus Pulmonary Syndrome (HPS).
How dangerous is it?
Some strains can be deadly, especially if treatment is delayed. In the Americas, severe forms may have mortality rates up to 30–50% in some outbreaks.
However:
- It is rare
- It does not spread easily like COVID or flu
- Most hantavirus infections come from rodent exposure, not human contact
WHO currently says the risk of a global outbreak is low.
How to protect yourself
Basic prevention is very effective:
- Avoid contact with rodent droppings or nests
- Don’t sweep/vacuum dry rodent waste directly (it can aerosolize particles)
- Use gloves and disinfectants while cleaning
- Keep homes and food storage rodent-free
Should people panic?
At this stage, no.
The current media attention is mainly because:
- Multiple deaths happened in a confined cruise ship setting
- The suspected strain is the rare Andes variant
- Social media is amplifying fears after the COVID experience
Public health agencies are monitoring the situation closely, but experts are not treating this as a likely pandemic scenario right now.
