The U.S. has confirmed its first outbreak of the H5N9 bird flu in poultry, as reported by the World Organisation for Animal Health (WOAH). Additionally, health officials in Yolo County have detected bird flu in a local backyard poultry flock, although they assure that the public risk remains low. These developments raise concerns about avian influenza, prompting discussions about its potential spread in areas such as Humboldt County.