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

Is there human-to-human spread of H5N1 bird flu? The CDC is awaiting antibody test results from the Missouri patient and ...

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

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

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

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

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 ...

The companies will use the funds to fill vials and pre-filled syringes with stockpiled vaccine ingredients, aimed at raising ...

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

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