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Infectious Canine Tracheobronchitis

Kennel cough, the common name that is given to infectious canine tracheobronchitis, is a very highly contagious respiratory disease among dogs. As the name of the disease suggests, it is typified by inflammation of the trachea and bronchi. This disease is found throughout the world and is known to infect a very high percentage of dogs at least once during their lifetime. It is also medically referred to as tracheobronchitis and Bordetella.

Young puppies can suffer the most severe complications that can result from this disease, since they have an underdeveloped immune system that is still strengthening. Also at increased risk are older dogs, which have decreased immune capabilities, and pregnant bitches, which also have lowered immunity to infections.

Symptoms

• Dry hacking cough is the most common symptom
• Cough may sound like honking
• Retching
• Watery nasal discharge
• In mild cases, dogs would likely be active and eating normally
• In severe cases, symptoms progress and can include pneumonia, inappetence, fever, lethargy and even death
• Unvaccinated puppies and young dogs, or immunocompromised dogs might experience the most severe symptoms of the disease

Causes

Most of the time there has been a recent boarding that has placed the dog in contact with a number of other dogs.

Some of the most common causes that contribute to the infectious canine tracheobronchitis disease are Bordetella bronchiseptica, parainfluenza virus, and mycoplasma. Apart from the canine herpes virus, reovirus and the canine adenovirus can also cause this disease. As any one of these organisms can cause the symptoms of this disease, in most of the cases, the result of the disease is thought to be more than one organism combined. However, the most common and important organism that causes tracheobronchitis is the parainfluenza virus. This particular virus causes gentle symptoms that last less than a week, unless there is an involvement with other bacteria.

The Bordetella bronchiseptica is also a common type of bacteria that is often isolated from this disorder. According to the clinical signs the visible onset of infection usually occurs three to four days after initial exposure, but when it is combiend with other organisms – such as a combination parinfluenza-bordatella infection – the symptoms may last for up to three weeks.

Diagnosis

The diagnosis for this disease is largely based upon the type of symptoms that are being presented and your dog's history with regards to exposure to other dogs. You will need to give a thorough history of your dog's health and onset of symptoms. A complete blood profile will be conducted, including a chemical blood profile, a complete blood count, and a urinalysis. These blood tests, along with viral isolation and bacterial cultures, will be performed in order to verify individual agents that are causing the kennel cough.