An extensive look at wastewater samples taken across the United States from May to July found traces of the H5N1 bird flu ...

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 ...

A patient in Missouri who was hospitalized after an infection with bird flu had the H5N1 strain of the virus, the US Centers ...

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

San Diego County is now the fifth locality in the state to report the environmental detection of H5 influenza virus or "bird ...

Public health officials are still trying to determine how a Missouri resident contracted bird flu without having any contact ...

Several labs will work with federal health authorities to develop a test for avian influenza, as the number of human cases ...

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.

Bird flu cases have been popping up all across the country, including in Arizona, with a little over 60 confirmed cases in ...

Health officials on Thursday said they don’t know how a Missouri person caught bird flu but believe it may be a rare instance ...

State and federal officials have identified new cases of Avian influenza at three Central Valley dairies as the number of ...

A Missouri resident has developed bird flu, despite having no known contact with any infected animals or humans.