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

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

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

The Missouri case is the only bird flu diagnosis in the United States this year where the person hadn’t had direct contact ...

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 ...

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 ...

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

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

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

In what could be the first cases of bird flu spreading between humans in the United States, a group of potential H5N1 ...