State laboratory testing confirmed a case of highly pathogenic H5N1 avian influenza (HPAI) in an Anne Arundel County backyard flock on March 12, 2025. The Maryland Department of Agriculture has quarantined all affected premises,

A highly pathogenic strain of avian influenza has been detected in a backyard flock in Anne Arundel County, prompting state officials to quarantine the affected premises and depopulate the birds to prevent the disease from spreading,

A case of highly pathogenic avian influenza was detected in a mixed species backyard flock in Dallas County, according to the Iowa Department of Agriculture and Land Stewardship. H5N1 strain of the bird flu has impacted more than 166 million birds in backyard and commercial poultry operations since 2022,