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

Kleptoparasitism, in which a bird harasses another to steal its food, might introduce avian flu to the continent, currently ...

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 ...

On Monday state officials announced they had completed testing on all 95 licensed farms in Massachusetts that have dairy ...

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

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

The H5N1 virus, initially restricted to Eurasia and Africa, has since spread to North and South America and even reached ...

With the approach of fall and cooler weather across the United States, officials say the risk posed by the H5N1 bird flu ...

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

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