Symptom2 connections · 1 source
Lethargy
A state of abnormal drowsiness, fatigue, or lack of energy commonly observed in animals experiencing systemic viral infections.
Key Facts
- Approximately half of the experimentally infected ferrets exhibited marked lethargy.
- Lethargy often precedes more severe clinical deterioration or mortality in acute viral infections.
- It serves as a key behavioral indicator for veterinarians monitoring disease progression.
- The symptom correlates with systemic inflammation and respiratory compromise in SARS cases.