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

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

Four additional healthcare workers in Missouri who came in contact with a hospitalized bird flu patient developed mild ...

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

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

A possible cluster of bird flu infections has grown to include eight people, in what may be the first examples of ...

Four more Missouri healthcare workers are experiencing mild respiratory symptoms after coming in contact with a bird flu ...

Four additional healthcare workers in Missouri who were in contact with a bird flu patient developed mild respiratory ...

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 ...

Another health care worker who was exposed to a Missouri patient who tested positive for bird flu developed respiratory symptoms but wasn't tested for the flu.

For influenza viruses, imperfection is a strength. They constantly mutate, producing new strains that challenge immune ...

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