The first major global review of bird flu in cats reveals an emerging threat of a potential human pandemic. Spring is here, ...

Health officials are making a renewed call for vigilance against bird flu, but some experts are puzzling over why reports of ...

How dangerous is it? Where did it come from? H5N1 influenza’s origins stretch back to the 1990s, and key events paved the way ...

The most recent infections confirmed by the Centers for Disease Control and Prevention were in early February.

Brazilian authorities hope to determine by Tuesday whether a confirmed outbreak of highly pathogenic avian influenza among ...