Avian influenza, or the bird flu, is an extremely infectious respiratory disease that affects all domestic poultry, including laying hens, broilers, and turkeys, as well as waterfowl and game birds.

More information: Jing Yang et al, Genetic diversity of H9N2 avian influenza viruses in poultry across China and implications for zoonotic transmission, Nature Microbiology (2025). DOI: 10.1038 ...

MARICOPA COUNTY, AZ — The Arizona Department of Agriculture says poultry at a Maricopa County commercial farm have tested positive for avian flu. The birds reportedly began showing signs of ...

Avian flu, or bird flu, refers to a group of diseases that result from infections with specific influenza viruses. These viruses infect birds but rarely spread to humans. Animal influenza viruses ...

Outbreaks of avian influenza A(H5N1) clade 2.3.4.4b viruses continue to be widespread among birds and poultry in many parts of the world, with transmission to mammals including humans in some ...

The growing warnings about the avian flu, also known as H5N1 or H5N9 flu, have led the public to question whether the infection can be spread to humans through eating eggs or chicken. Start the ...

Ostriches on a British Columbia farm have died of the avian flu. Canada ordered hundreds of others to be culled. But two top Trump administration officials have objected. By Vjosa Isai Reporting ...

PHOENIX (AZFamily) — A third poultry farm in Maricopa County is under quarantine after testing positive for the avian flu. Despite efforts to eliminate the spread, Arizona has already lost ...

An outbreak of avian flu in 2023 hammered a colony of southern elephant seals in Chile’s Tierra del Fuego region, leading to a 50% decline in its population. But over the 2024-2025 breeding ...

Migratory bird season peaks in Michigan in May. Dairy and poultry farmers worry that the birds could bring H5N1 avian influenza with them to Michigan and infect their flocks and herds. Scientists ...