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

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

Political apathy and selfishness in the face of outbreaks of bird flu and mpox show that the world has not learned from the ...

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

Avian flu in dairy cows could stick around on US farms forever, and is raising the risk of outbreaks in mammals—including ...

The number of California dairy herds reported to have outbreaks of H5N1 bird flu has grown to eight.

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 someone with bird flu became ill on the same day, the C.D.C. reported. But the second person was not ...

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

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

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