With the approach of fall and cooler weather across the United States, officials say the risk posed by the H5N1 bird flu ...

This year in the United States, 14 people have tested positive for avian influenza, or bird flu. Nine of those became ...

Federal officials are still trying to determine how a Missouri resident with no known exposure to bird flu, contracted the ...

This is where we are with bird flu at the moment: the awkward space between watchful waiting and all-out panic mode. The ...

In a disclosure that can't eliminate the possibility that bird flu may have spread from one human to another for the first ...

Mystery H5 flu case had a close contact who was ill at same time; CDC hopes blood tests will show if there was a connection.

The Missouri case has raised the possibility of human-to-human transmission of bird flu. But officials stressed Thursday there is no evidence of other people being infected and the risk to the general ...

The number of California dairy herds reported to have outbreaks of H5N1 bird flu has grown to eight.

The Centers for Disease Control and Prevention has picked five lab partners to develop a test for avian influenza A (H5N1) — ...

Since the patient’s flu type appeared suspicious on an initial test, it was sent for additional testing in state and federal ...

The patient, from Missouri, was hospitalised in the US on 22 August and tested positive for flu A. However, when doctors sent ...

A close contact of someone with bird flu became ill on the same day, the C.D.C. reported. But the second person was not ...