The H5N1 bird flu appears to be stampeding through dairy farms in California, the country's largest milk producer. Over the ...

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

Oseltamivir has a controversial past. Governments around the world have spent billions of dollars to stockpile the drug since ...

The mandatory testing comes as the total number of infected herds in California has risen to 17. Nationally, officials have ...

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

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

The convergence of multiple flu strains in one animal can allow new virus strains to form—just as they did in past pandemics.

Beloved native swans are particularly susceptible to a deadly strain of bird flu, according to scientists who fear for native ...

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

Another health care worker who was exposed to a Missouri patient who tested positive for bird flu developed respiratory ...

The world is watching how the U.S. is responding to the H5N1 bird flu outbreak in dairy cattle, a top WHO official said.

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