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 ...

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

A patient in Missouri who was hospitalized after an infection with bird flu had the H5N1 strain of the virus, the US Centers ...

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

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 ...

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

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

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

Researchers in Texas detected H5N1 in wastewater from 10 cities, but the risk to humans is currently low. Ongoing ...