Previous seasonal flu infections and vaccinations may protect us against infection from the highly pathogenic H5N1 bird flu outbreak.

Doctors say the case of a teen left in critical condition shows H5N1 "can cause severe human illness." Mutations in the virus are deepening concerns about the spread of H5N1.

In coming years, the bird flu may cost billions of dollars more in expenses and losses. Worse, the outbreak poses the threat ...

So far, the H5N1 virus isn't transmitted between people — but the CDC has found a mutation in a human case "concerning." ...

First come the horseshoe crabs. Hoisting their round, tank-like shells, they trundle out of the Delaware Bay under the first ...

Officials said there's been no evidence of human to human transmission of bird flu anywhere in the United States. Initially, the Barron County case was identified through testing at the Wisconsin ...

As the bird flu virus moved into cows and people, sluggish federal action, deference to industry and neglect for worker ...

In 14-hour shifts, dairy workers pumped gallons of electrolyte-rich fluids into ailing cows through ... half of around 900 people diagnosed with bird flu around the world have died.

In 14-hour shifts, dairy workers pumped gallons of electrolyte-rich fluids into ailing cows through ... half of around 900 people diagnosed with bird flu around the world have died.