Canine Infectious Tracheobronchitis is more commonly referred to as kennel cough. It is an upper respiratory infection that affects dogs. It gets its more common name due to the fact that it can spread quickly in close quarters such as a dog kennel or animal shelter.
Kennel Cough is a form of bronchitis and is most similar to a chest cold in humans. According to the ASPCA, it often clears up on its own (in approximately three weeks), but it is HIGHLY contagious to other dogs.
If you suspect that your dog is suffering from kennel cough, consult your veterinarian. It would be best to isolate your dog from other dogs due to the highly contagious nature of the infection.