Hospital workers reported respiratory symptoms after encountering a Missouri patient with H5N1 who had not been exposed to ...

Further testing could confirm whether the patient, who has since recovered, actually had bird flu despite testing positive.

California, the biggest U.S. milk-producing state, on Thursday confirmed two human cases of bird flu in people who had ...

Missouri officials are under growing pressure from national public health experts to pinpoint the source of the state’s first ...

Chances are low that human-to-human spread of bird flu occurred in a group of people who were exposed to a patient infected ...

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

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

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

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 ...

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