The Department of Agriculture Wednesday announced another confirmed case of highly pathogenic avian influenza, or HPAI. USDA’s Animal and Plant Health Inspection Service confirmed the HPAI outbreak in a commercial poultry flock in New Castle County, Delaware. APHIS and state officials have quarantined the flock and will depopulate the birds. The announcement follows the previous confirmation of HPAI in a non-commercial backyard flock in Maine and New York late last week. Other confirmed HPAI outbreaks include sites in Kentucky, Virginia, Indiana, and North and South Carolina. Earlier this month, APHIS expanded wild bird surveillance for avian influenza to include the Mississippi and Central Flyways. USDA says anyone involved with poultry should review their biosecurity plan and enhance their biosecurity practices to ensure the health of their birds. In addition to practicing good biosecurity, all bird owners should prevent contact between their birds and wild birds and report sick birds or unusual bird deaths to state and federal officials.