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 ...

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

In other H5N1 developments, the FDA's vaccine advisory group said it will discuss the composition of H5 vaccines when it ...

This is where we are with bird flu at the moment: the awkward space between watchful waiting and all-out panic mode. The ...

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 ...

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So far, there have been 14 human cases of bird flu this year. All the patients — except the one from Missouri — had been linked to sick dairy cows or poultry.

"The widespread detection of influenza A (H5N1) virus in wastewater from 10 U.S. cities is troubling," the authors concluded.

A patient in Missouri was hospitalized with bird flu despite having no known contact ... was successfully treated with antiviral medications at the hospital and has since been discharged ...

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

The patient from Missouri has recovered, but health officials are still investigating how they became infected.