The newer strain had been seen before in more than a dozen people exposed to poultry, but this is the first time an infection was traced to a cow. The Nevada dairy worker was exposed at a farm in ...

The U.S. winter virus season is in full force, and by one measure is the most intense in 15 years.

The Super Bowl is always packed with attention-grabbing ads, but Novartis’s cleavage-packed commercial created particularly ...

Yahoo News provides the latest updates on the spread of bird flu in the U.S., and its effect on rising egg prices and ...