CHICAGO -- A case of canine influenza has hit more than 1,000 dogs so far in Northern Illinois.
Veterinarians say the flu is an H3N8 strain that mutated from a horse virus to a dog virus, but it does not infect humans or cats.
It is highly contagious, and almost all dogs exposed will get the virus, although not all will get sick. Dogs that do get sick from the virus will be sick for two to three weeks, and need to be quarantined from other dogs.
Vets say about 10% of infected dogs can get pneumonia from the virus, and it can be fatal.
Dog owners should know there is a canine influenza vaccine available.