A 65-year-old patient in Louisiana died after contracting the H5N1 strain of bird flu, with an expert warning that the virus could potentially mutate and lead to a global pandemic

Bobbi Pritt, a professor of laboratory medicine and pathology at Mayo Clinic, has opened up about conditions required for bird flu to pass from person to person.

BIRD flu can infect horses without causing any symptoms, new research reveals, sparking fears it could be spreading under the radar. It’s a new chapter in the unfolding threat of H5N1, widely

How deadly is the bird flu? The US has reported its first death from avian influenza, H5N1. Here's what to know about bird flu mortality rate and who is at risk.

Bird flu continues to affect animal species everywhere, including a Chilean flamingo and a harbor seal at Lincoln Park Zoo in Chicago. Both animals died of the avian flu last week, and many staffers and volunteers were devastated to have lost them.