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Symptoms to watch for after possible rodent exposure.

Early hantavirus symptoms often look like a flu-like illness. This page explains the early signs and the warning signs that need urgent care.

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Symptoms

Early symptoms

  • Fever
  • Headache
  • Muscle aches
  • Fatigue
  • Nausea or vomiting
  • Stomach pain or diarrhea

Serious warning signs

  • Shortness of breath
  • Coughing
  • Chest tightness
  • Rapid worsening after flu-like symptoms
Breathing problems after possible rodent exposure need urgent medical evaluation.

What makes this important?

According to CDC guidance, early symptoms can be confused with influenza. That is why a clear symptom list and a warning section help visitors react sooner.

When symptoms worsen quickly, especially breathing symptoms, do not wait to seek care.

Tip: Mention any rodent exposure when you contact a doctor or emergency service.