The numbers of birds affected by highly pathogenic avian influenza (HPAI) continues to rise, jumping by over 2 million since Dec. 27. The total number birds in the U.S. affected by the virus since the initial discovery in February 2022 has now surpassed 79.5 million, according to USDA’s Animal and Plant Health Inspection Service.

APHIS data shows the largest case over the last week was a commercial table egg pullet operation of 1.36 million birds in Hardin County, Ohio, confirmed on Dec. 27. California also reported three new cases in commercial table egg operations. A table egg pullet operation of 151,000 birds in Marin County, Calif., and two commercial table egg laying operations of 54,000 birds and 37,300 birds in Sonoma County confirmed the virus. Read more