Avian Influenza outbreak hits 2 million laying hens in Arizona

HPAI, particularly the H5N1 strain, is known for its rapid spread and high mortality rate among birds. Once detected, standard containment measures include immediate quarantine, culling of infected and exposed birds, and thorough disinfection of facilities. These steps, while necessary to prevent further spread, come at a high economic cost to producers.

The USDA’s Animal and Plant Health Inspection Service (APHIS) is working closely with state and local authorities to manage the outbreak. Surveillance and testing have been intensified in surrounding areas to detect any additional cases early. So far, no other commercial flocks in Arizona have reported infections, but officials remain on high alert.

Avian Influenza in U.S.

This incident is part of a broader pattern of avian influenza activity across the United States. While the number of new cases had declined in recent months, the Arizona outbreak serves as a stark reminder that the virus remains a persistent threat. Earlier in May, a separate outbreak was confirmed in a commercial turkey flock in South Dakota, affecting nearly 31,000 birds.

The economic impact of the Arizona outbreak is expected to be significant. In addition to the direct loss of birds, producers face disruptions in operations, potential trade restrictions, and increased biosecurity costs. Consumers may also see fluctuations in egg prices depending on how the supply chain adjusts.

Risk to people

Public health officials emphasize that the risk to humans remains low, as HPAI rarely infects people. However, they advise avoiding with sick or dead birds and reporting any unusual bird deaths to local authorities.

Conclusion

As containment efforts continue, the poultry industry and government agencies are urging vigilance and cooperation to prevent further spread and protect both animal and public health.