Veterinary advice should be sought from your local veterinarian before applying any treatment or vaccine. Not sure who to use? Look up veterinarians who specialize in poultry using our directory listing. Find me a Vet

Avian Nephritis Viral Infection

Avian nephritis viral (ANV) infection is caused by a highly-contagious astrovirus which affects chickens, ducks, geese, and turkeys worldwide. ANV infection predominately affects the bird's kidneys, resulting in renal damage and visceral urate deposits due to gout. Sometimes the virus targets the intestines.

Chickens become infected with ANV through direct or indirect contact with the feces of infected birds.

Clinical Signs

Weight loss
Stunted growth


  • Reverse transcriptase PCR


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.




Scientific References

Age Range

Usually a subclinical disease of young chickens.

Risk Factors

  • Poor biosecurity