Scientists have discovered that avian influenza viruses have a gene that makes them incredibly resistant to heat, rendering our body's natural defense system – fever – powerless in fighting infection.

H5N1 bird flu has infected growing numbers of people worldwide in recent years, but this week saw something new: the first recorded human case of an H5N5 avian influenza virus. What is this virus and ...

A person in the Washington State has died of avian influenza. It’s the first human death from bird flu in the U.S. since January—but the infection was of a different strain than the one that has been ...

The latest incident comes after Hong Kong confirmed an elderly man was diagnosed with the disease earlier this week. Chinese authorities have confirmed a second case of human bird flu infection this ...

Lower egg prices have subdued public discussion about bird flu. But the virus is expected to devastate farms this winter.

Bird flu, or H5N1, has touched most of the globe, but there is one spot it hasn't reached. Researchers down under are preparing for it, but gaps in bird flu surveillance elsewhere makes it difficult.