Rare H5N9 Bird Flu Outbreak Detected at California Poultry Farm Amid Ongoing H5N1 Spread

A rare H5N9 bird flu strain has been detected at a poultry farm in California, marking the first U.S. case of this subtype. The outbreak, along with the spread of the more common H5N1 strain, has led to the culling of nearly 119,000 birds. Authorities are investigating the situation, while concerns grow over the potential for the virus to infect humans and spread to other animals.