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 outbreak.

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

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

The administration is committing an additional $306 million toward battling the virus, and will distribute the money before ...

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 ...

Most human cases of bird flu in North America have been mild, a fact that’s underscored by a new study of the first 46 ...

The CDC previously confirmed the first severe human case of bird flu in Louisiana, but now the CDC has confirmed a virus ...

Genetic analysis of H5N1 bird flu virus that infected a Canadian teenager shows 'worrisome' mutations, new studies reveal.