As H5N1 bird flu continues to spread around the US, health officials recently found that 7 percent of dairy workers tested on farms in two states had evidence of recent infection — and some had signs ...

Roughly a year after a massive outbreak of H5N1 highly pathogenic avian influenza killed more than 17,000 elephant seals, including about 97% of their pups, scientists estimate only about a third of ...

The virus has been confirmed in at least 446 cattle herds in 15 states. Last week, the Agriculture Department said a pig at ...

The sounds of barking elephant seals are again in the air along the breeding grounds of Península Valdés, Argentina—but it's quieter. Almost exactly a year after a massive outbreak of H5N1 highly ...

A teenager in British Columbia, Canada, has contracted the H5 strain of bird flu, marking the country's first confirmed human ...