Presidents always seem to have a crisis to deal with. George W. Bush had 9/11. Barack Obama had the Great Recession. Donald ...

Three government agencies—the FDA, the CDC, and the U.S. Department of Agriculture—share responsibility for the bird-flu ...

Germany reported an outbreak of highly pathogenic H5N1 bird flu on a farm in the eastern region of Saxony near the border ...

None of the health care workers or other contact have tested positive for avian flu antibodies so far — but could their ...

In what could be the first cases of bird flu spreading between humans in the United States, a group of potential H5N1 ...

Four more health-care workers who tended to a person hospitalized with H5N1 bird flu have revealed that they had respiratory ...

More than a month after a person in Missouri mysteriously fell ill with H5-type bird flu, investigators in the state are ...

Seven people in contact with a patient hospitalized with bird flu also developed symptoms, the C.D.C. reported. Some are ...

"Even sporadic cases of human-to-human transmission indicate a big change in the virus and suggest it is exploring new ...

Testing is ongoing among five health care workers and a household member exposed to the infected person who all came down ...

What is known so far about the human cases of bird flu in the U.S. is enough to worry those who spend their professional days ...

Researchers reveal how H5N1 viruses rapidly adapted to mammals through genetic reassortment and specific mutations, raising ...