The H5 bird flu in question is officially known as the A/H5N1 avian virus. It is a virus that originates and propagates among birds, which can cause influenza in animals infected with it.

The progression of the species-jumping disease has been unprecedented, including the first-ever U.S. cases of infections in ...

The U.S. hasn’t been able to control the spread of the H5N1 bird flu. And now, there’s been a reported outbreak in the U.S. of another strain of avian influenza, H5N9. This H5N9 outbreak ...

"This type of prevention can be very useful in controlling infection outbreaks and containing the bird flu pandemic," said an immunologist.

H5N1 has been the dominant grouping of strains fueling this past year's outbreaks in the U.S., with different variants of that virus spreading in wild birds, poultry flocks, dairy cattle ...

Are eggs safe to eat amid the current avian flu outbreak? Have people in the U.S. contracted bird flu? We VERIFY the answers to common questions.

More than 100 chickens, geese, ducks and other birds at the farm at Hess-Hathaway Park in Waterford have been culled after some of them tested positive for the highly pathogenic H5N1 bird flu ...