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 ...

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

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 ...

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

A person in Missouri is the United States’ first case of H5 avian influenza without a known exposure to a sick animal, the US ...

A person in the state of Missouri has become the first in the United States to test positive for bird flu without a known ...

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.

A case of bird flu has been confirmed in a Missouri resident who had no known contact with dairy cows, poultry or wil ...

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

So far, there have been 14 human cases of bird flu this year. All the patients — except the one from Missouri — had been ...