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Q Fever in Dogs

Bacterial Zoonotic Disease in Dogs

 

The Q fever disease is caused by the Coxiella burnetii, a pathogenic bacteria that is structurally similar to the Rickettsia bacteria but genetically different.

 

A dogwill most commonly become infected with the organism if it ingests infected bodily fluids (i.e., urine, feces, milk, discharges), tissues, or diseased carcasses (e.g., those from cattle, sheep, or goats). The bacteria can also become airborne and is transmittable through fleas or lice, which carry C. burnetii in its parasitic form.

 

Q fever is an worldwide endemic, affecting cats and dogs of any age, gender, or breed, and as a zoonotic disease, it is transmissible to humans. Care must be taken when dealing with bodily fluids, organs, and/or tissue material of any animal, particularly farm animals. Dispose of all birth remains properly and feed your dog pasteurized products only.

 

If you would like to learn more about how this disease affects cats, please visit this page in petMD health library.

 

Symptoms and Types

 

Lungs are thought to be the main portal of entry into systemic circulation. C. burnetii will then replicate in the organ's lining, causing widespread vasculitis. Inflammation of the dog's blood vessels will result in the death of its blood cells and hemorrhaging of the lungs, liver, and central nervous system.

 

Once the dog has contracted the disease it may display some of the following symptoms:

 

  • Fever
  • Lethargy
  • Anorexia
  • Depression
  • Incoordination
  • Seizures
  • Miscarriage (not common in dogs)

 

The types of symptoms your dog displays and the severity of the Q fever will ultimately depend on the particular strain of organism your dog is infected with. Often, animals with C. burnetii will undergo a period of latency (inactivity). However, during the birthing process the bacterium may reactivate, resulting in large numbers of bacteria entering the placenta, and the host's bodily fluids, urine, feces, and milk.

 

Causes

 

Exposure to animals infected with C. burnetii (especially those that have just given birth), ticks, fleas, and lice.

 

Diagnosis

 

Providing a detailed history of your dog's health and its lifestyle leading up to the onset of the symptoms will assist your veterinarian in the diagnosis.

 

Your veterinarian will then conduct a complete blood profile on your dog, including a chemical blood profile, a complete blood count, and a urinalysis. Once collected, the dog's blood serum will be refrigerated to assist in the identification of the organism's type. The veterinarian will also collect a tissue sample (e.g., from the placenta) and refrigerate it for later use as an inoculator.

 

 

 

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