The rise of bird flu across farms in California has raised questions about the virus and its potential threat to humans.

Japanese authorities began culling some 50,000 chickens Sunday after a bird flu outbreak at a farm in the northern Iwate region.

France has confirmed bird flu outbreaks on two poultry farms, just days after being officially declared free of the virus, ...

The U.S. government failed to eliminate the virus on dairy farms when it was confined to a handful of states. Now at least 875 herds across 16 states have tested positive.

Japanese authorities began culling some 50,000 chickens on Sunday after a bird flu outbreak at a farm in the northern Iwate ...

The outbreak with happened in the northern Iwate region marks the 19th incident of the season, according to the Agriculture Ministry of Japan.

Japanese authorities have started culling around 50,000 chickens after a bird flu outbreak was reported at a farm in the ...

Japanese authorities began culling some 50,000 chickens Sunday after a bird flu outbreak at a farm in the northern Iwate Prefecture region. It is the 19th bird flu outbreak of the season in Japan, the ...

The farm reported rising poultry deaths, with tests confirming bird flu; the U.S. and England also reported cases.

The CDC called findings about bird flu mutations in a human case “concerning” but says the risk to the general public from ...