Hantavirus.pub
Symptoms guide ยท Source-based summary

Hantavirus Symptoms: Early Signs, Later Symptoms, and When to Seek Care

Symptoms can begin like a flu-like illness and may later involve breathing problems or other severe signs. This page is for general information only and is not a substitute for medical advice. Seek professional medical care if you may have been exposed and develop concerning symptoms.

Early symptoms

  • Fever
  • Fatigue
  • Muscle aches
  • Headache
  • Dizziness
  • Chills
  • Nausea, vomiting, diarrhea, or abdominal pain

Severe warning signs

  • Coughing
  • Shortness of breath
  • Chest tightness
  • Difficulty breathing
Possible incubation period

Symptoms may begin days to weeks after exposure. For Andes virus, CDC says symptoms may appear 4 to 42 days after exposure. Timing alone does not confirm the illness, but it is an important detail to share with a clinician if you were exposed.

When to seek medical care

Seek medical care immediately if symptoms occur after possible exposure, especially if breathing symptoms appear.

Symptoms FAQ

What are the symptoms of hantavirus?+

Early symptoms can include fever, fatigue, muscle aches, headache, dizziness, chills, and nausea, vomiting, diarrhea, or abdominal pain.

What are severe warning signs?+

Severe warning signs can include coughing, shortness of breath, chest tightness, and difficulty breathing.

What is the possible incubation period?+

Symptoms may begin days to weeks after exposure. CDC says Andes virus symptoms may appear 4 to 42 days after exposure.

When should I seek medical care?+

Seek medical care immediately if symptoms occur after possible exposure, especially if breathing symptoms appear.

How to reduce exposure

Use the prevention guide if you are trying to lower risk before or after possible rodent exposure.

Sources

  • CDC About Hantavirus

    Provides public-facing symptom context, transmission basics, and general information about hantavirus disease.

  • CDC About Andes Virus

    Includes the Andes virus exposure window and explains why this hantavirus is treated as a special case.

  • CDC Clinical Overview

    Summarizes early symptoms, later respiratory symptoms, and the medical progression clinicians watch for.

Medical disclaimer

This website is for public information only and does not provide medical diagnosis or treatment.

Last reviewed: May 10, 2026

This site summarizes public information from WHO, CDC, ECDC, PAHO/WHO, and relevant national public health authorities.