Most human cases of bird flu in North America have been mild, a fact that’s underscored by a new study of the first 46 ...

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

The Centers for Disease Control and Prevention and other federal agencies are closely monitoring the spread of the HN51 avian ...

Federal health officials have disclosed new unsettling details about the first severe case of bird flu reported in the United ...

Genetic analysis of H5N1 bird flu virus that infected a Canadian teenager shows 'worrisome' mutations, new studies reveal.

The call to authorize a vaccine comes after the CDC announced that a person in Louisiana was hospitalized with the country's first known case of severe illness caused by the virus earlier this month.

The Centers for Disease Control and Prevention is keeping close eye on pandemic indicators amid bird flu cases arising in the United States.

Palm Beach State Attorney Dave Aronberg, whose term expires this week, is hanging up a shingle and going into private ...

Amid a "concerning" new mutation in bird flu that may indicate the virus could begin to more easily infect humans, what are ...

The virus in the first severe human bird flu case in the U.S. was found to have mutated. Follow Newsweek's live blog for ...