Dairy workers in Texas show signs of prior, uncounted bird flu infections in a new study. Without better surveillance, researchers warn that health officials could be caught off guard if the virus gets more contagious.
Avian influenza is being detected in more dairy herds. Scientists are paying close attention to how the virus is changing and what that means for its pandemic potential.
Cattle are getting sick with H5N1, and one person got sick in Texas. How bad could this be for dairy farms? Could it spread among people? Here's what scientists are learning.
