A second health worker in contact with the Missouri patient who tested positive for bird flu also developed symptoms but wasn ...

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

A second health worker who cared for a person hospitalized in Missouri with H5N1 bird flu developed mild respiratory symptoms ...

A third close contact of a patient in Missouri who was hospitalized with H5N1 bird flu has reported that they also ...

For the past several years, millions of birds around the world have been killed or culled because of a highly pathogenic form ...

Mysterious US bird flu case in person without any known contact with an infected animal raises spectre of human-to-human ...

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

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

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

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 ...

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.