http://www.helium.com/items/1565235-...nza-virus-h3n8

Canine influenza (dog flu) terrible respiratory infection of dogs caused by a virus (H3N8) mutated from equine (horses) influenza virus. More than forty years equine influenza virus (damage and kills cells they infect) diagnosed among horses. In January 2004, first canine influenza virus H3N8 confirmed among Greyhound race dogs in Florida, sharing the same racetrack as horses
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