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

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

A routine flu screening in late summer found the H5N1 virus in a Missouri patient. Unlike the other reported cases of avian ...

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 ...

Sixteen human bird flu cases have been reported in the United States this year, including the two workers who tested positive ...

U.S. health officials have run into obstacles in their efforts to determine whether a Missouri person infected with H5N1 bird ...

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 ...

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