The virus is spreading among animals, while viral mutations raise concerns about potential adaptation to human hosts.

The CDC has revealed the red flags it is monitoring for that suggest that bird flu was about to become the world's next pandemic.

The bird flu outbreak has spread to all 50 states, infecting dairy cattle, poultry farms and 61 humans across the country.

The bird flu outbreak has spread to all 50 states, these maps show. Here are the symptoms and what to do if you think you ...

Newsweek has created a map showing which states have recorded the most human bird flu cases, after the first human case of ...

Public health officials have just reported the first known “severe” case of bird flu in the United States. There are now 61 ...

It can spread to other animals and to humans. The H5N1 bird flu isn’t new. The CDC says the virus was first identified in Southern China in domestic waterfowl in 1996. In 1997, it spread to 18 ...

There have already been at least 1.9 million illnesses, 23,000 hospitalizations and just under a thousand deaths from the flu ...

As of December 30, the CDC has confirmed 66 human cases of the bird flu virus in the United States. Most of them were mild infections among dairy workers and others who had contact with infected ...

The CDC said: "People with work or recreational ... Map showing which states have the most bird flu cases recorded in humans. Map showing which states have the most bird flu cases recorded in ...

This week, the Centers for Disease Control and Prevention (CDC) announced that a person had been hospitalized with a “severe case” of bird flu. The hospitalization marks the first time that ...