05/18/2026
Hantavirus – ALL YOU NEED TO KNOW
How it spreads
Mainly by breathing in aerosolized particles from infected rodent urine, droppings, or saliva during cleaning or in enclosed spaces.
Rarely: rodent bites, contaminated food/surfaces.
Person-to-person spread is uncommon. Only Andes hantavirus in South America has shown close-contact transmission via respiratory droplets.
Symptoms
Incubation: 1-8 weeks. Starts like the flu - fever, muscle aches, fatigue, nausea, headache.
Can progress fast to:
HPS: Severe breathing trouble, fluid in lungs, respiratory failure.
HFRS: Kidney failure, bleeding, low platelets.
Fatality: 1-15% for most strains, up to 50% for Andes strain.
Treatment
No approved antiviral yet except this vaccine. Treatment is supportive care in ICU - oxygen, fluids, ventilator, dialysis if needed. Early hospital care improves survival.
Prevention
Keep rodents out: seal holes, store food sealed, remove brush near buildings.
Clean safely: ventilate area first, wet mop with bleach solution, don’t sweep dry droppings. Wear gloves and mask.
Avoid contact with wild rodents and their waste.
2026 update
Recent Andes hantavirus outbreaks in South America and on a cruise ship showed person-to-person spread. Thailand now lists it as a dangerous communicable disease with 42-day quarantine for high-risk contacts. Risk to the general public remains low.
Bottom line: Avoid rodents and their waste. If you’ve had exposure and get flu-like symptoms + breathing issues, seek hospital care immediately.