Avian influenza, commonly called “bird flu,” is a viral infection that spreads in birds, cows and other animals.

As cases of bird flu continue to climb among wild birds, poultry and cattle in the U.S., the virus poses an increasing threat to human health. A total of 67 human cases of the H5N1 virus have been ...

But the H5N1 bird flu virus, which was first identified in 1996 when it spread from wild birds to domestic birds, can. In fact, it’s considered a highly pathogenic avian influenza, because it ...

The Highly Pathogenic Avian Influenza (HPAI) H5N1 virus rarely infects humans, but health officials are advising the public not to handle dead birds or other animals and to avoid those that appear ...

Map of bird flu virus' spread:Has the bird flu spread across the US? See map as virus continues to wreak havoc While there is ...

This is the second known instance of a type of avian flu being introduced into cattle herds by birds. It suggests that the virus could be seeding itself into cattle through introductions from wild ...

Pasteurization is the only widely recognized method of killing H5N1, the virus that causes bird flu, in milk. However, ...

Dairy cows in Nevada have been infected with a second version of the avian influenza virus that is different from the one rampaging through herds since the spring, Agriculture Department officials ...

The newer variant of avian influenza that recently infected dairy cattle in Nevada has a genetic change that’s thought to help the virus copy itself in mammals — including humans — more ...