Genetic analysis of a bird flu virus detected in a person in Missouri who didn’t previously have contact with animals offers ...

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 ...

A close contact of a Missouri resident identified as having a human case of the H5N1 avian flu also became sick around the ...

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

The Centers for Disease Control and Prevention said Thursday it has yet to identify “a clear source” of infection in a ...

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.

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

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