The United States Department of Agriculture’s (USDA) Animal and Plant Health Inspection Service (APHIS) has confirmed the presence of highly pathogenic avian influenza (HPAI) in two flocks in Montana—a non-commercial, backyard flock (poultry) in Cascade County, and a non-commercial, backyard flock (non-poultry) in Judith Basin County.
Samples from the flocks were tested at the Montana Veterinary Diagnostic Laboratory, part of the National Animal Health Laboratory Network, and confirmed at the APHIS National Veterinary Services Laboratories in Ames, Iowa.