Early general symptoms
- Fever and chills
- Headache
- Muscle aches, often in large muscle groups
- Marked fatigue or a strong unwell feeling
- Dizziness
- Nausea, vomiting, diarrhea, or abdominal pain
Early hantavirus illness may resemble influenza or other fever-related respiratory infections, so exposure context is important.
Breathing difficulty after a possible exposure should be handled urgently.
Early symptoms are not clinically specific. A clinician needs details about rodent exposure, enclosed-space cleanup, travel, work-related risks, and any close contact with confirmed Andes virus disease.