The highly pathogenic avian influenza has been discovered in dairy herds in Michigan and Idaho, signaling the virus's spread into new US states. Confirming the presence of bird flu in a Michigan herd that recently received cows from Texas, the National Veterinary Services Laboratories also reported presumptive positive test results in New Mexico, Idaho, and Texas. This alarming development has prompted a joint statement from the U.S. Department of Agriculture, the Food and Drug Administration, and the Centers for Disease Control and Prevention.