Although development of a jab for the H5N1 strain of avian flu is well under way, other strains are receiving less attention ...

The H5N1 avian influenza virus—commonly known as bird flu—has been causing outbreaks in dairy cows in the United States since ...

Finding that vampire bats along Peru’s coast carried H5N1 antibodies raises concerns that multiple bat species could become ...

Three state agencies remain on alert after a third presumptive case of avian influenza — or bird flu — was found in a wild ...

Key mutations and animal spread could raise the risk to humans. Bird flu is spreading. The avian influenza virus H5N1 has ...

When bird flu spilled over into dairy cattle last year, researchers discovered high concentrations of the H5N1 virus in the ...

Officials have detected highly pathogenic avian influenza (HPAI) H5N1 in a dairy cattle herd in Wisconsin, according to the ...

The HPAI strain of avian flu is infecting and killing birds in Missouri and Kansas. Several cases have been reported around Kansas City.

Bird flu, or H5N1, has touched most of the globe, but there is one spot it hasn't reached. Researchers down under are preparing for it, but gaps in bird flu surveillance elsewhere makes it difficult.

Scientists have detected H5N1 bird flu exposure in vampire bats, revealing a previously hidden wildlife pathway that could ...

The first severe case of H5N1 bird flu was confirmed in Louisiana. Here is a map of other states that have been affected.

New research reveals why bird flu poses such an unusual danger to humans: it can keep multiplying even at temperatures that normally shut viruses down.