A resident of Washington state has been admitted to the hospital with an H5N5 bird flu infection, according to state health authorities. The strain detected in this patient has not previously been identified in humans.

H5N1 bird flu samples collected from a severely ill patient in Louisiana show signs of mutations that may make the virus more transmissible to humans, the Centers for Disease Control and Prevention reported Thursday. The unidentified patient, who was ...

To address the rising bird flu cases, the US government has committed $590 million to fast-track Moderna's mRNA bird flu vaccine development. The vaccine aims to combat current bird flu strains in wild birds,