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

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

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

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

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

More than a dozen tigers have been incinerated after they contracted bird flu at a zoo, according to state media VNExpress.

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

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

At least one household member and six healthcare workers who encountered the index case-patient are being investigated after ...

A second health worker who cared for a person hospitalized in Missouri with H5N1 bird flu developed mild respiratory symptoms ...

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

Public health officials in California have confirmed two human cases of bird flu, or avian influenza, the state Department of ...