On 10 May 2022, the United States Department of Agriculture (USDA) reported to the World Organization for Animal Health (OIE) a highly pathogenic H5N1 influenza outbreak in the United States.  
   
The outbreak occurred in Rock and Waushara Counties, Wisconsin, and was confirmed on May 5, 2022. The source of the outbreak is unknown or uncertain.  Clinical and laboratory tests found that two red foxes died.  
   
The outbreak is not over yet, and the USDA will submit weekly follow-up reports.