An ongoing bird flu epidemic has forced farmers to kill millions of egg-laying hens, leading to a serious shortage.

H5N1 has been the dominant grouping of strains fueling this past year's outbreaks in the U.S., with different variants of that virus spreading in wild birds, poultry flocks, dairy cattle ...

Scientists also know a lot more about H5N1 bird flu than they did the SARS-CoV-2 virus, and the US has been preparing for the threat of a new flu outbreak for a long time. Still, the virus is ...

The strain is known as the “Eurasian H5N1 strain.” The strain is unusually deadly for wild birds when compared with other strains of its kind, according to the Arizona Game and Fish Department.

The U.S. hasn’t been able to control the spread of the H5N1 bird flu. And now, there’s been a reported outbreak in the U.S. of another strain of avian influenza, H5N9. This H5N9 outbreak ...

Highly pathogenic avian influenza H5N9 has been identified in U.S. poultry for the first time, after outbreak at a commercial ...

This marks the first case of H5N1 at a Maryland commercial poultry operation since ... The poultry affected had highly pathogenic H5 avian influenza (HPAI) of the Eurasian lineage 2.3.4.4b with early ...

It also recommends asking about recent close contact with a symptomatic person with a possible or confirmed case of H5N1. Demetre Daskalakis, MD, MPH, director of CDC's National Center for ...