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.

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.

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

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

Here's what the latest research is saying about how it is spreading and how to keep yourself and your pets safe.

The bird flu virus found in a severely ill patient hospitalized in the United States has mutated to become better adapted to ...

An Oregon house cat died after eating pet food that tested positive for bird flu, Oregon authorities said, prompting a recall ...

Fatinah Albeez, a research associate with the Broad Institute’s Sabeti Lab, tests milk samples for bird flu in Boston.

Eight people accused of assisting an Islamic extremist who beheaded a French history teacher will hear the verdicts in their cases Friday, more than four years after the death of Samuel Paty outside ...

Wisconsin's first case of H5N1 bird flu in a human was confirmed Friday by test results from the Centers for Disease Control and Prevention. Until now, officials had listed the case involving a ...