H5N1 Bird Flu Returned to Utah Commercial Egg Operations Last Week, Wiping Out 1.2 Million Hens

A commercial egg-laying operation in Cache County, Utah was confirmed on July 6, 2026, to have an H5N1 highly pathogenic avian influenza outbreak, affecting 1.2 million hens, the largest single commercial poultry detection in over a month. Eggs from the affected flock will not enter the food supply.