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

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.

Teen's recovery from H5N1 bird flu raises concerns after genetic mutations suggest virus could become more dangerous to ...

In coming years, the bird flu may cost billions of dollars more in expenses and losses. Worse, the outbreak poses the threat ...

Each week some revelation about bird flu seems to flutter through the news cycle. Here's what the latest research is saying about how it is spreading and how to keep yourself and your pets safe.

SACRAMENTO -- California Gov. Gavin Newsom declared a state of emergency Wednesday "to streamline and expedite the state's response" to bird flu. The declaration is a result of more cases being ...

Everyone has so much going on at the turn of the year — family trips punctuated by someone getting a funny cough ... a rare flu coupled with the more disturbing in a child. This shiver of déjà vu is ...

or bird flu, and was admitted to the hospital in recent days, according to the Centers for Disease Control and Prevention. The CDC determined the person was likely exposed to H5N1 from sick or ...