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

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

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

Antibody blood test results expected later this month may help answer a crucial question: Is there human-to-human ...

The Centers for Disease Control and Prevention should have results later this month that provide more insight into how a ...

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 ...

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 ...

The mystery continues over how a Missouri man came down with the bird flu -- without having any animal contact.  Experts say ...

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

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