A commercial game bird flock in Lancaster County, Pennsylvania, has tested positive for avian influenza. The July 2 detection ...

The virus, which scientists call H5N1, has spread like wildfire around the globe in recent years, surprising and horrifying ...

Bird flu fears have focused on the poultry and dairy industries and human health. But wild animals are threatened, too—at ...

The H5N1 avian flu is circulating in cows and other mammals. Whether it will make a permanent leap to humans is another ...