Dogs and Flu Virus

You may have read in the paper about a strain of influenza virus that is affecting dogs. “Canine flu” received coverage in the New York Times a few months ago, and a vaccine has recently been developed for the virus. Kildaire Animal Medical Center does NOT recommend the vaccine for our patients at this time. Here is why:

Canine influenza, or at least the particular strain that is now receiving attention, was first noticed several years ago in greyhounds racing in Jacksonville. This flu virus appears to have mutated from an equine flu virus. It is not related to the “bird flu”, “swine flu”, or any other virus that can affect people. The canine flu virus has never affected a human, and there is no evidence to suggest that people can catch it.

As with most flu viruses, symptoms can range from mild to life-threatening. In fact, the signs mimic those of “kennel cough,” a contagious bacterial disease. Most affected dogs develop a cough, nasal discharge and perhaps a fever. A small percentage of dogs may progress to pneumonia. An even smaller percentage of cases (less than 10%) have been fatal.

The vaccine does not prevent the disease; rather, it lessens the severity of symptoms. It would perhaps be useful in high-density situations such as shelters and racing tracks. The vaccine is not considered a “core” (must-have) vaccine by the American Veterinary Medical Association.

Kildaire Animal Medical Center believes in vaccinating your pet as infrequently as possible. We evaluate each new vaccine to determine whether its benefits outweigh its potential adverse effects. In this case, we do not believe that the vaccine is warranted for household pets.

In summary:

  • The disease does not appear to affect humans
  • The disease is usually self-limiting, like most flu viruses are
  • The vaccine lessens symptoms but does not prevent disease
  • The vaccine for canine flu is not a “core” (must-have) vaccine

Of course, there are exceptions to every rule. If you feel that your pet is at high risk – a show dog, for example, or a pet who boards frequently – we will be happy to discuss the vaccine with you. And please be assured that we will continue to monitor canine influenza for any signs of increased virulence or outbreaks.

Dr. Charles Livaudais