Recognising hantavirus symptoms early is the single most important factor in surviving infection. Hantavirus symptoms typically begin 2–4 weeks after exposure and are easily confused with influenza — making awareness of the full hantavirus symptom progression critical for anyone in an endemic region or during an active hantavirus outbreak.
Hantavirus infection follows four distinct phases. Case fatality in Hantavirus Pulmonary Syndrome (HPS) reaches 20–40%, underscoring why tracking hantavirus symptoms and seeking care immediately matters.
| Feature | HPS (Americas) | HFRS (Eurasia) |
|---|---|---|
| Primary symptom | Respiratory failure | Kidney failure |
| Case fatality | 20–40% | 0.1–12% |
| Main virus | Sin Nombre, Andes | Hantaan, Seoul, Puumala |
| Primary region | North & South America | Europe, Asia |
| Transmission | Deer mouse droppings | Bank vole, field mouse |
Hantavirus symptoms vary depending on the strain. In the Americas, the dominant syndrome is Hantavirus Pulmonary Syndrome (HPS), where hantavirus symptoms centre on acute respiratory failure. In Europe and Asia, Hemorrhagic Fever with Renal Syndrome (HFRS) is more common, with hantavirus symptoms focusing on kidney damage and haemorrhage.
During a hantavirus outbreak, public health authorities advise anyone presenting with flu-like hantavirus symptoms who has had recent rodent contact to seek immediate medical evaluation. There is no approved antiviral drug; early supportive care is the only intervention that reduces mortality from hantavirus symptoms.
Use our hantavirus map to check active hantavirus outbreak regions, and our prevention guide for steps to avoid exposure.