On Apr. 5, 2024, the U.S. Centers for Disease Control and Prevention (CDC) announced that Texas had reported a human infection with highly pathogenic avian influenza (HPAI) A(H5N1) virus (H5N1 bird flu) after confirmation by CDC. This was the first time this virus had been found in a cow and the second human case of H5N1 bird flu reported in the United States. There was a previous case in 2022 in Colorado in a poultry worker.