USDA's Animal and Plant Health Inspection Service over the weekend detected highly pathogenic H5N8 avian influenza in a commercial turkey flock in central California.
This is the first finding of HPAI in commercial poultry during the ongoing disease incident in the Pacific Flyway. No human cases of these avian influenza viruses have been detected in the United States, Canada, or internationally, and there continues to be no public health concern, USDA said.
Samples from the flock were tested at the California Animal Health & Food Safety Laboratory System. The APHIS National Veterinary Services Laboratories in Ames, Iowa, confirmed the finding.
APHIS is partnering with the California Department of Food and Agriculture, which has quarantined the facility. USDA said APHIS and CDFA have initiated an incident command response, and APHIS will assist CDFA in depopulating the remaining birds on the property to prevent the spread of the disease.
Birds from the involved flock will not enter the food system, USDA said.
USDA will notify the World Organization for Animal Health (OIE). OIE trade guidelines call on countries to base trade restrictions on sound science and, whenever possible, limit restrictions to those animals and animal products within a defined region that pose a risk of spreading disease of concern.
A highly pathogenic strain of H5N8 influenza was detected in December in wild birds and in a backyard flock of guinea hens and chickens in Oregon.
As a result of the detections, the Chinese government banned all imports of U.S. poultry and eggs, effective Jan. 8.