A second type of bird flu has been found in U.S. dairy cows for the first time, the U.S. Department of Agriculture announced Wednesday.

Tools used to contain previous bird flu outbreaks aren’t working this time, experts say. The virus has sickened at least 67 people in the U.S. and killed one, with egg producers begging for a new ...

Avian influenza is spreading rapidly through Pennsylvania, hitting commercial poultry farms in multiple counties and ...