Canine influenza is an emerging infectious respiratory disease that spreads rapidly in social dog settings, causing significant welfare impacts in affected communities.
Canine influenza causes significant acute suffering in affected dogs through fever, severe respiratory symptoms, and the exhaustion of illness. Dogs with uncomplicated influenza experience 2-3 weeks of uncomfortable symptoms. Secondary bacterial pneumonia in severe cases causes life-threatening respiratory compromise requiring hospitalization. The highly contagious nature of the virus means outbreaks spread rapidly through social dog populations, causing simultaneous illness in many dogs. Welfare management requires isolation of affected dogs to prevent spread, appropriate treatment of secondary infections, and supportive care. Prevention through vaccination in social dogs reduces individual illness risk and limits community spread. The social implications of influenza - isolating dogs from valued social activities during illness and recovery - add behavioral welfare costs beyond the physical illness.