CDC: Bird Flu may become more infectious to humans ...

The CDC study provides the largest window to date into how the bird virus first detected in March in dairy cows may be ...

Bird flu has infected nearly 450 dairy farms in 15 states since March, according to USDA data. The CDC is not seeing ...

The H5N1 bird flu virus spreading among cows is infecting more farm workers than experts realized. The CDC tested 115 workers ...

Almost from the beginning of the spread of H5N1 bird flu among farms and ranches in the U.S. earlier this year, experts and ...