To view the announcement on USDA's plan to conduct milk testing to better assess where H5N1 is present, visit:
USDA has been responding, in collaboration with State officials, to HPAI H5N1 detections in U.S. poultry since February 2022. After the first detection of HPAI H5N1 in dairy cattle in March 2024, USDA has worked swiftly and diligently to assess the prevalence of the virus in the U.S. dairy herds and respond accordingly. More information about these efforts, including the milk testing strategy, can be found at https://www.aphis.usda.gov/livestock-poultry-disease/avian/avian-influenza/hpai-detections/livestock.