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.

Public health officials have warned that new mutations of bird flu with human flu could have dangerous consequences.

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 ...

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

So far, the H5N1 virus isn't transmitted between people — but the CDC has found a mutation in a human case "concerning" ...

Bruce Willis’ wife, Emma Heming Willis, is getting candid about the reality of having “unconditional love” for her partner ...

The virus is spreading among animals, while viral mutations raise concerns about potential adaptation to human hosts.

() − The Centers for Disease Control and Prevention and other federal agencies are closely monitoring the spread of the HN51 ...

The Centers for Disease Control and Prevention is keeping close eye on pandemic indicators amid bird flu cases arising in the ...