A woman is hospitalized in Wyoming with H5N1 bird flu, likely the result of handling infected birds in a backyard flock, health officials say.

H5N1 bird flu is branching out. New data from the Centers for Disease Control and Prevention indicates that a second type of H5N1 has likely spread from dairy cows to humans.

Arizona agricultural officials say they now have the first detection of H5N1 avian influenza in milk produced by a dairy herd within the state.