On April 17, 2026, the State of California fulfilled all necessary actions and surveillance requirements to self-declare free from HPAI in Poultry.

As of April 17, 2026, the California Department of Food and Agriculture (CDFA) has self-declared California as free from Highly Pathogenic Avian Influenza (HPAI) in poultry. This declaration can be made after meeting requirements established by USDA including the release of all quarantines on poultry premises and undergoing a subsequent waiting period with no additional disease detections. Active HPAI in poultry in the U.S. impacts international exports of poultry and poultry products.

HPAI response activities have been completed. As of February 27, 2026, all dairies under quarantine for H5N1 have been released. On April 17, 2026, the quarantine was released on the last infected eligible poultry premises in Sonoma County.

The H5N1 HPAI incident in California is now final, closed, and resolved.

For additional information on USDA’s updates on interstate dairy cattle movements, visit our H5N1 Bird Flu Virus in Livestock webpage.