PUBLICATION V2

Canine Influenza

Publish Date: October 16 2025 |  Language: English

DOI: doi.org/10.7290/UTIAPub/V2

View PDF

If you have questions about this resource, contact the College of Veterinary Medicine.

Summary

Canine influenza, or “dog flu,” is a highly contagious respiratory virus in dogs, primarily caused by the H3N2 and H3N8 strains. It spreads easily through direct contact, aerosols, and contaminated objects, especially in places where dogs congregate. Symptoms are usually mild and include coughing, nasal discharge, fever, and lethargy, though severe cases can occur. Diagnosis requires laboratory testing, and treatment focuses on supportive care. Vaccination is available and recommended for dogs with frequent exposure to others, as it can reduce disease severity and spread, even if it does not fully prevent infection.