Over the past three years, avian influenza (H5N1) has spread around the U.S. and affected many species of birds and mammals, ...

The Pennsylvania Department of Agriculture today confirmed the first positive case of Highly Pathogenic Avian Influenza (HPAI) in domestic poultry in Pennsylvania in 2025, in a 50,000-bird layer ...

As bird flu sweeps across US poultry and cattle farms, researchers are racing to find ways to contain the outbreaks before ...

A recent study confirms that an H5N1 avian influenza virus isolated from a dairy farm worker can spread through the air between mammals.