H5N9 is a rare subtype of the influenza A virus that can cause highly pathogenic avian influenza (HPAI), also known as bird ...

The United States is facing a significant public health crisis as a surging avian influenza outbreak wreaks havoc on poultry ...

Since March, 66 confirmed bird flu infections have been reported in the U.S., but previous illnesses have been mild and most have been detected among farmworkers exposed to sick poultry or dairy ...

The United States has reported its first outbreak of H5N9 bird flu in poultry on a duck farm in California, Reuters reported, ...

The individual contracted bird flu after exposure to a backyard flock and wild birds. It is the first death recorded in the United States attributed to H5N1, or avian influenza. The person was ...

They also said a genetic analysis had suggested the bird flu virus had mutated inside the patient, which could have led to the more severe illness. They have disclosed few other details about the ...