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

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

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

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.

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

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

The latest developments are highly concerning, as they raise the possibility that the H5N1 virus has evolved the ability to ...

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

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

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

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