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A confirmed Andes virus cluster at sea.
Health authorities are tracking a hantavirus outbreak linked to the expedition vessel MV Hondius. Multiple cases of Andes virus (ANDV) — a rare hantavirus capable of human-to-human transmission — have been confirmed, with three deaths reported. The World Health Organization and Germany's Robert Koch-Institut (RKI) are coordinating with national authorities.
Passengers and crew aboard the MV Hondius expedition cruise present with severe respiratory symptoms following a South American voyage.
Laboratory testing identifies Andes hantavirus (ANDV) — the only hantavirus documented to transmit person-to-person.
WHO issues situational guidance. RKI advises monitoring of returning travelers. Contact tracing initiated across multiple countries.
What is Hantavirus?
Hantaviruses are a family of rodent-borne viruses transmitted to humans primarily through inhalation of aerosolized excreta from infected rodents. Symptoms can range from mild flu-like illness to severe Hantavirus Pulmonary Syndrome (HPS) or Hemorrhagic Fever with Renal Syndrome (HFRS), with case fatality rates of up to 35–40% for some strains.
The Andes virus, found primarily in southern South America, is uniquely concerning: it is the only known hantavirus capable of human-to-human transmission, making outbreak containment particularly important.
Common Symptoms
Fever · muscle aches · headache · fatigue · nausea · abdominal pain — typically 1–8 weeks after exposure.
Severe Phase
Coughing · severe shortness of breath · pulmonary edema · cardiovascular collapse — requires immediate hospitalization.
Treatment
No specific antiviral cure exists. Early supportive care in an ICU setting is critical. Prevention remains the strongest defense.
Reducing risk — based on official guidance.
Recommendations consolidated from WHO, CDC, and RKI public health advisories.
Avoid Rodent Contact
Stay away from areas with visible rodent activity, droppings, or nests — particularly enclosed spaces.
Ventilate Enclosed Areas
Air out cabins, sheds, and storage spaces for at least 30 minutes before entering.
Don't Sweep Dry Surfaces
Use wet cleaning with disinfectant. Sweeping aerosolizes virus particles.
Wear Protective Gear
Use gloves and N95-equivalent masks when cleaning rodent-contaminated areas.
Seal Entry Points
Close gaps and holes in homes and vessels to prevent rodent ingress.
Monitor Symptoms
Seek medical attention immediately if flu-like symptoms develop after potential exposure.
Information drawn from trusted authorities.
Always consult primary sources for the latest guidance. This page summarizes publicly available information from international health organizations.
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