Canine Influenza is a relatively new contagious respiratory virus of dogs. The virus was first reported in dogs in 2004. The virus (H3N8) was originally a flu virus of horses that spread to dogs and can now spread between dogs.

Because the virus is relatively new, dogs have virtually no natural immunity. Most dogs will display coughing, fever, and nasal discharge as the primary symptoms. A small percentage of patients may develop severe symptoms, including pneumonia.

For more information on Canine Influenza, please check out the following links:

Influenza updates from the AVMA

Pet owner information at

There is now an effective vaccine available for Canine Influenza; two injections (2 - 4 weeks apart) are required the first year, followed by annual boosters. Feel free to ask any of our staff members if you have further questions about Canine Influenza.