A potentially deadly new strain of the swine flu virus cropped up in more places in the United States and Mexico on Saturday, in what the World Health Organization called "a public health emergency of ...

A new bird flu outbreak has been confirmed as the virus continues to spread across the U.S. The deadly H7N9 strain was detected on a poultry farm in Noxubee, Mississippi, last week, for the first ...

H7N9 — is detected in at a poultry farm; scientists learn that past human flu exposure may provide some immunity to H5N1.

The infection was detected in a single sheep in Yorkshire on Monday and, while bird flu does not spread easily to people, the ...

Very few humans have gone up against bird flu. But we've all dealt with seasonal flu for years. Some of our immune systems might be primed to fend off a worse case, research finds.

A new strain of a highly pathogenic bird flu known as H7N9 has surfaced at a poultry farm in Mississippi where chickens are raised for breeding. The finding of the new strain came as researchers ...

The H5N1 strain of bird flu has the "potential to become a pandemic", according to an expert at the UK Health Security Agency. Richard Pebody, director of epidemic and emerging infections at UKHSA, ...