A Canadian teen who is in critical condition after contracting H5N1 bird flu was infected with a version of the virus that is different from the one circulating in U.S. cattle.

The situation is "horrifying," said Jennifer Nuzzo, director of the Pandemic Center at Brown University ... including one ...

Another cause for concern: flu season is underway in the U.S., and as seasonal influenza virus goes around, “humans, ...

but we also know that the strain of influenza virus that entered pigs in 1918 then circulated in them for over 90 years ...

Amid an ongoing outbreak of bird flu in American dairy herds and poultry flocks, Canadian officials have announced ...

A year after an outbreak of H5N1 killed thousands of elephant seals in Argentina, only about a third of the seals normally expected here returned, scientists estimate.

The sounds of barking elephant seals are again in the air along the breeding grounds of Península Valdés, Argentina—but it's ...

The presentation, so brief as to be little more than a public service announcement, signals an abandonment of efforts to ...

A pig at an Oregon farm was found to have bird flu. It's the first time the virus has been detected in U.S. swine and raises ...

The 2009 H1N1 flu pandemic had swine origins. The risk to the general public remains low, but the agency is continuing to gather information. The USDA also announced Oct. 30 that it is expanding ...

Amid an ongoing outbreak of bird flu in poultry and dairy cows in the United States, a case of H5N1 has now been confirmed for the first time in a pig.

H5N1 influenza has now been detected in pigs. This was something virologists had been worrying about ever since this highly ...