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

With cold and flu season approaching, it’s worth knowing about another virus out there—albeit extremely rare: bird flu. Like ...

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

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

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

San Diego County is now the fifth location in California to detect the bird flu, county officials announced Monday.

The Czech Republic has reported an outbreak of the highly pathogenic H5N1 strain of avian influenza, or bird flu, on a ...

The Centers for Disease Control and Prevention has picked five lab partners to develop a test for avian influenza A (H5N1) — ...

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 ...

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