The latest human case of bird flu in the U.S. occurred in a patient with no reported exposure to affected animals, sparking ...

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

Missouri healthcare worker who had contact with a hospitalized patient infected with bird flu developed mild respiratory ...

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

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

An individual from Missouri with no known exposure to risk factors got infected, and a close contact developed symptoms but ...

A second Missouri healthcare worker who had contact with a hospitalized patient infected with bird flu developed mild ...

A person in Missouri contracted bird flu without known exposure to sick animals, marking a unique case in the current ...

The source of the girl's infection isn't known, though H9N2 has been reported in the country's poultry before.

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