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.

Public-health experts have been highly critical of the federal and state response to the virus, which was first identified in ...

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

There are limited reports of avian flu, otherwise known as H5N1, spreading between humans in other parts of the world, ...