Health experts warn of another potential pandemic due to the H5N1 avian flu. The virus, impacting birds and mammals, has spread across the U.S. and resulted in significant poultry losses. The avian ...

Researchers discovered why bird flu can survive temperatures that stop human flu in its tracks. A key gene, PB1, gives avian viruses the ability to replicate even at fever-level heat. Mice experiments ...

The avian influenza outbreak that put some of California’s most beloved marine mammal and sea bird populations at risk has ...

After a summer lull in U.S. cases of avian influenza in both poultry and dairy cattle—and no human infections reported in the country since February—the virus is back. The currently circulating bird ...

It's become more popular in the last few years for people who don't farm to keep flocks of chickens in their back yards; many put up signs to sell any extra eggs. But avian flu has sickened birds in ...