The closely-spaced deaths of two cougars in Washington state suggest the virus is likely more widespread than thought.

Since 1959 the avian flu virus H5N1 has been popping up around the globe. Now scientists believe it could spark the next ...

"A total of 40 seal carcasses were sampled from the site ... Bird flu, also known as avian influenza or H5N1, is a disease caused by a virus that infects birds and sometimes other animals.

Authorities said the child contracted the virus after consuming raw chicken. It was not clear if she had been deliberately ...

A scoping review outlines how H5N1 bird flu is spreading in the U.S., jumping from birds to mammals and cattle, and ...

A dangerous bird flu, in other words, was suddenly circulating in mammals—mammals with which people have ongoing, extensive ...

Bird flu has been found in seals at one of England's best-known colonies for the second time in recent months, scientists have said. The virus has been detected in 15 dead seals during recent testing ...

The first case of H5N1 bird flu in a human has been reported in Mexico. A three-year-old girl from the state of Durango has ...

"Globally, we continue to see that mammals can be infected with avian influenza A (H5N1)," Meera Chand, Emerging Infection ...

LONDON — The United Kingdom reported the first confirmed case of avian influenza found in sheep, announced the country’s ...

Scientists call for the federal government to invest more in preventing the disease from spreading to Australia's $5 billion ...