Key Facts About Canine Influenza (Dog Flu)

An “update on a recent canine influenza (dog flu) outbreak in the Chicago area” is available in our news and highlights section.


What is canine influenza (dog flu)?

Dog flu is a contagious respiratory disease in dogs caused by a specific Type A influenza virus referred to as a “canine influenza virus.” This is a disease of dogs, not of humans.


What is a canine influenza virus?

The “canine influenza virus” is an influenza A H3N8 influenza virus (not a human influenza virus) that was originally an equine (horse) influenza virus. This virus has spread to dogs and can now spread between dogs.

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