Hantaviruses are a family of viruses spread mainly by rodents through their urine, droppings, and saliva. Depending on the specific strain and the region, these viruses can cause two distinct, life-threatening conditions in humans: Hantavirus Pulmonary Syndrome (HPS) and Hemorrhagic Fever with Renal Syndrome (HFRS).
How Transmission Occurs
Hantavirus is generally not passed from person to person. Instead, humans are infected through:
- Airborne Transmission: This is the most common route. When rodent waste is disturbed, the virus can become airborne in dust particles that humans then breathe in.
- Direct Contact: Touching contaminated surfaces or materials and then touching your nose or mouth.
- Bites: Although rare, being bitten by an infected rodent can transmit the virus.
Types of Diseases
1. Hantavirus Pulmonary Syndrome (HPS)
Predominant in North and South America, HPS is a severe respiratory disease.
- Early Symptoms: These can mimic the flu, including fatigue, fever, and muscle aches (especially in the thighs, hips, and back).
- Late Symptoms: About 4 to 10 days after the initial phase, the lungs fill with fluid, causing shortness of breath and coughing. This stage is critical and requires immediate medical attention.
2. Hemorrhagic Fever with Renal Syndrome (HFRS)
Commonly found in Europe and Asia, HFRS primarily affects the kidneys.
- Symptoms: Intense headaches, back and abdominal pain, fever, chills, and nausea.
- Severity: Symptoms can range from mild to severe, potentially leading to low blood pressure, vascular leak, and acute kidney failure.
Prevention and Control
Because there is no specific vaccine or cure for hantavirus infection, prevention is the primary defense:
- Seal Up: Close any holes in your home or garage that could allow rodents entry.
- Trap Up: Use traps to reduce rodent populations in and around human living areas.
- Clean Up: Avoid “dry sweeping” or vacuuming areas with rodent droppings, as this kicks up dust. Instead, soak the area with a disinfectant or a bleach-water solution before cleaning with a damp cloth or mop.
Note: If you have been around rodents or in a space where they have nested and begin to feel “flu-like” symptoms with significant shortness of breath, seek medical evaluation immediately and mention your potential exposure.