HantavirusMap Blog

hantavirus-symptoms

May 14, 2026•5 min read

Hantavirus Symptoms: What to Watch For

Hantavirus Pulmonary Syndrome (HPS) is a severe respiratory disease that requires immediate medical attention. Understanding the symptoms can mean the difference between life and death.

Early Symptoms (Days 1-5)

The early symptoms of hantavirus are often mistaken for the flu:

**Fatigue** — Severe tiredness that doesn't improve with rest

**Fever** — High temperature (38°C/100.4°F or higher)

**Muscle Aches** — Especially in large muscle groups (thighs, hips, back, shoulders)

**Headaches** — Persistent and often severe

**Dizziness** — Lightheadedness and chills

**Nausea** — May include vomiting, diarrhea, or abdominal pain

Late Symptoms (Days 4-10) — Medical Emergency

Four to ten days after the initial phase, late symptoms appear. These indicate severe respiratory distress:

**Coughing** — Dry cough that worsens rapidly

**Shortness of Breath** — Difficulty breathing even at rest

**Tight Chest** — Feeling of pressure or constriction

**Fluid in Lungs** — Lungs fill with fluid, requiring medical intervention

When to Seek Help

Seek emergency care immediately if you develop flu-like symptoms after potential exposure to rodents or their droppings, especially if symptoms progress to coughing and breathing difficulty.

Prevention

The best prevention is avoiding contact with rodents and their waste. Seal holes in your home, use traps, and wear protective gear when cleaning potentially contaminated areas.

Learn more about prevention strategies → →