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, this ...

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

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

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

California health officials yesterday announced the state's second H5N1 avian flu infection in a dairy farm worker who had no ...

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.

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 ...

Seven people fell ill with flu-like symptoms after contact with someone infected with H5N1, raising fears that the virus has ...

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