Infectious disease experts say infection of 13-year-old in British Columbia could indicate virus is mutating to infect humans ...

A 13-year-old girl in British Columbia who was hospitalized with bird flu for several weeks late last year harbored a mutated ...

“For example, if a human gets infected with a bird flu and also carries a human influenza A virus, these two viruses can ...

Public health experts are urging vigilance amid recent reports of severe bird flu cases in two North American patients.

Previous seasonal flu infections and vaccinations may protect us against infection from the highly pathogenic H5N1 bird flu ...

The administration said it was committing $306 million toward improving hospital preparedness, early-stage research on ...

Doctors say the case of a teen left in critical condition shows H5N1 "can cause severe human illness." Mutations in the virus are deepening concerns about the spread of H5N1.

The agency says it is looking for red flags, but the risk to the public still remains low. Meanwhile, a Louisiana patient with a severe case of bird flu showed worrying mutations in the samples ...

A U.S. Army veteran who drove a pickup truck into a crowd of New Year's revelers in New Orleans, killing 15 people, had ...

Highly pathogenic avian influenza A(H5N1) viruses have caused widespread infections in dairy cows and poultry in the United ...