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Arizonosis

Arizona Infection, Avian Arizonosis

Overview


Arizonosis is a septicemic disease that is found worldwide, caused by the bacterium Salmonella enterica subsp. arizonae (S. arizonae). It has historically been a disease of young turkeys, but it can also infect other domestic and wild birds (including chickens), and a wide variety of different animal species. Arizonosis presents in both acute or chronic form and is characterized by septicemia, neurological signs and blindness. S. arizonae has the ability to elaborate endotoxins, resulting in inflammation in multiple organs most notably in the yolk sac, brain, eye, ceca, and bloodstream of young chicks.

Transmission
S. arizonae is an egg-transmitted disease, meaning infected adult breeding birds are usually carriers which spread the bacteria to their young through their eggs. Rodents, wild birds, and reptiles can also transmit S. arizonae into the environment.

Clinical Signs

Listlessness
Blindness
Depression
Weakness
Loss of appetite
Diarrhea
Leg paralysis
Twisted necks
Huddling
Torticollis
Convulsions
Opisthotonus

Diagnosis

  • Clinical signs
  • Physical exam
  • Bacterial culture
  • ELISA

Treatment

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.

Prevention

  • Probiotics
  • Biosecurity

Scientific References

Age Range

It most often affects young chicks.