Both patients were dairy workers whose illnesses were mild. Investigators are continuing to evaluate the contacts of a ...

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

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 ...

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

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 ...

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

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

As an outbreak of bird flu among dairy cows continues to spread in the United States, two more cases have been reported in ...

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