Poultry at a third commercial farm located in Maricopa County have tested positive for Avian Influenza. When the poultry began showing clinical signs consistent with avian influenza on May 29, 2025, samples from the location were submitted to the Arizona Veterinary Diagnostic Lab (AZVDL) for preliminary determination, then submitted to the National Veterinary Services Laboratory (NVSL) for confirmation, received on May 30.

Eggs produced after the onset of clinical signs of illness have not entered the food supply, and there have been no signs of illness in humans. Consumers in Arizona and around the nation can remain confident in the safety and quality of eggs and egg products. The Arizona Department of Agriculture (AZDA) has engaged with the USDA, Arizona Department of Health Services, Arizona Department of Environmental Quality, Arizona Department of Emergency and Military Affairs, and Maricopa County Department of Public Health to ensure a quick and appropriate response to addressing this animal disease emergency.

According to the Centers for Disease Control and Prevention (CDC), the risk to the general public is considered to be low with those most at risk of exposure being individuals who are directly involved with the daily care of birds. Information regarding protective actions for workers and the monitoring of avian influenza can be found on the CDC’s website, which is updated regularly.

The affected poultry farm has been placed under quarantine on the recommendation of the Director of the AZDA and the AZDA State Veterinarian. Enhanced biosecurity measures are in place and efforts are underway to perform virus elimination. All applicable sanitation responses have been quickly implemented. Our dedicated and experienced team continues to monitor the situation closely to ensure consumer protection is always maintained.