Hantaviruses are a family of rodent-borne viruses that occasionally cross over to people. Most human infections begin with breathing in dust contaminated by wild rodent droppings or urine. There is no ongoing pandemic — what follows is an explainer of what the virus is, how it moves, and how to avoid it.
Hantaviruses cause two main illnesses in humans: hantavirus pulmonary syndrome (HPS) in the Americas and hemorrhagic fever with renal syndrome (HFRS) in Europe and Asia. Major strains include Sin Nombre (North America), Andes (South America), and Hantaan, Seoul, Puumala, and Dobrava (Eurasia).
People are usually infected by inhaling aerosols from the urine, droppings, or saliva of infected rodents — most often when disturbing dust in enclosed spaces such as sheds, cabins, attics, barns, or crawl spaces.
Incubation is typically 1–8 weeks. The illness has an early flu-like phase followed by a severe late phase that differs by virus type. Seek emergency care immediately if shortness of breath develops after possible rodent exposure.
Seal openings rodents could enter, set traps, and remove food sources. Before cleaning a space with rodent activity, ventilate it for at least 30 minutes.
For nearly all hantaviruses, no — it spreads from rodents to people, not between people. The one documented exception is the Andes virus in Argentina and Chile, which has been linked to limited person-to-person transmission.
No. Domestic pets are not known to carry or transmit hantavirus. The reservoir hosts are wild rodents such as deer mice, cotton rats, rice rats, and bank voles depending on the region.
Risk is much lower in dense urban housing than in rural cabins, sheds, or agricultural buildings, but it is not zero — Seoul virus is carried by Norway rats found in cities worldwide. The practical advice is the same: keep rodents out of living spaces and clean any droppings safely.
There is no widely licensed hantavirus vaccine and no specific antiviral cure. Treatment is supportive — oxygen, careful fluid management, and ICU-level care including dialysis or mechanical ventilation when needed. Early hospital admission strongly improves outcomes.
Usually 1 to 8 weeks, with most cases showing symptoms 2 to 4 weeks after exposure to infected rodents or their droppings.
This dashboard is an experimental demonstration. Country counts shown above are illustrative and not real surveillance data. The medical information in this section is for general education only and is not medical advice — if you suspect hantavirus exposure or develop symptoms, contact your local public-health authority or a qualified clinician immediately.