A man in Washington has been diagnosed with a strain of the bird flu that’s never been detected in humans before. The ...

A Washington man has tested positive for the first human case of the H5N5 bird flu strain, previously found in animals only.

Concerns about a rare strain of bird flu have intensified after epidemiologists warned that even isolated human infections ...

An American man has been left "severely ill" after catching an "unpredictable" virus which has never been seen before in ...