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Liver Disease, Infectious Hepatitis, Vibriosis

Campylobacteriosis is a zoonotic bacterial disease that occurs in chickens worldwide. The disease is caused by infection with Campylobacter jejuni and sometimes C. coli. It is one of the most common causes of food-borne bacteria gastroenteritis in humans worldwide.

Infection with campylobacter is associated with prolonged intestinal inflammation, leading to diarrhea susceptibility to secondary pathogens of the digestive tract.

Campylobacter is primarily a concern in broiler production and in backyard farms where humans plan on eating their birds.

C. jejuni is transmitted indirectly, through contamination of the environment by infected birds' feces. It is also transmitted from flies, particularly during the summer months when fly populations are greatest.

Clinical Signs

Significant drop in egg production
Pasty butt
Diarrhea (often yellowish)
Loss of appetite


  • History
  • Clinical signs
  • Physical exam
  • Campylobacter jejuni culture
  • Fecal exam


Supportive care: Isolate the bird from the flock and place in a safe, comfortable, warm location (your own chicken "intensive care unit") with easy access to water and food. Limit stress. Call your veterinarian.



  • Biosecurity
  • Minimize contact with dogs and environments in which dogs have been occupying, as dogs are carriers of the bacteria

Scientific References

Risk Factors

  • Recent history of bumblefoot or hock burns
  • Unsanitary living conditions
  • High populations of flying insects