Here is the breakdown of what you need to know:
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1. How It Spreads
You don't usually get Hantavirus from a bite. Instead, it’s airborne.
- Aerosolization: The virus is shed in rodent urine, droppings, and saliva. When these are stirred up (like when sweeping a dusty garage or shed), the virus enters the air.
- Inhalation: Humans breathe in those contaminated dust particles.
- Touch: Less commonly, you can get it by touching a contaminated surface and then touching your nose or mouth.
2. The Two Main Types
Depending on where you are in the world, the virus manifests differently:
- Hantavirus Pulmonary Syndrome (HPS): Common in the Americas (carried by deer mice and cotton rats). It attacks the lungs. It starts with flu-like symptoms but can rapidly lead to severe shortness of breath as lungs fill with fluid. The mortality rate is high—around 38%.
- Hemorrhagic Fever with Renal Syndrome (HFRS): More common in Europe and Asia. This version primarily targets the kidneys and can cause internal bleeding and low blood pressure.
3. Early Symptoms
The tricky part is that early symptoms look exactly like a standard flu, appearing 1 to 8 weeks after exposure:
- Fever and chills
- Muscle aches (especially in the thighs, hips, and back)
- Fatigue and dizziness
- Digestive issues (nausea, vomiting, or stomach pain)
4. Prevention (The "Don't Sweep" Rule)
Since there is no specific vaccine or cure, prevention is everything:
- Seal Up: Close holes in your home to keep rodents out.
- Trap: Use traps to clear out existing infestations.
- Clean Safely: Never sweep or vacuum rodent droppings. This kicks the virus into the air. Instead, soak the area with a mixture of bleach and water for 5 minutes, then wipe it up with paper towels while wearing gloves and a mask.
5. Is it Contagious?
In almost all cases, no. You cannot catch Hantavirus from another person. The only exception is the "Andes virus" in South America, which has shown rare instances of person-to-person transmission, but the standard Hantaviruses found elsewhere are strictly rodent-to-human.
