The second round of states coming on board was announced and included Indiana, Maryland, Montana, New York, Ohio, Vermont and ...

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." ...

New Hampshire is gearing up to join a federal program testing dairy cattle for virulent strains of bird flu, which so far has ...

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

All year, I’ve been keeping tabs on the H5N1 avian flu outbreak in dairy cattle and birds in the United States. As a ...

The virus is spreading among animals, while viral mutations raise concerns about potential adaptation to human hosts.

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.

Highly pathogenic avian influenza (HPAI), also called bird flu, was detected in a non-commercial backyard flock in Franklin County, Vermont. The disease, confirmed through lab testing, caused ...

HPAI is considered low risk to humans, the agency said, and there have been no human cases in New England during the current ...

A backyard flock in Vermont was sickened with H5N1, agricultural officials said on Thursday, following other reports of bird ...

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