For influenza viruses, imperfection is a strength. They constantly mutate, producing new strains that challenge immune ...

A Louisiana resident infected by H5N1 bird flu has died, state authorities there reported Monday, marking the first U.S.

The CDC just confirmed the first US-based severe human case of bird flu in Louisiana. Currently hospitalized, the patient was exposed to sick and deceased birds in backyard flocks, also making this ...

A person in Louisiana who was hospitalized with a severe case of bird flu has died.

A Louisiana patient hospitalized in critical condition with severe bird flu has died, the state health department said Monday ...

A genetic analysis suggests the bird flu virus mutated inside a Louisiana patient who contracted the nation’s first severe ...

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.

The first 'severe' human case of bird flu has many around the country concerned, but those in New Jersey may not need to feel too alarmed as no human cases have been reported in the Garden State ...

Bird flu infections are rare in people ... 1999 – Two children in Hong Kong are infected by the H9N2 strain. February 2003 – Eighty-four people in the Netherlands are affected by the H7N7 ...

California officials have declared a state of emergency over the spread of bird flu, which is tearing through dairy cows in that state and causing sporadic illnesses in people in the U.S. That ...

Gov. Gavin Newsom’s state of emergency declaration on Wednesday due to bird flu has raised questions about the H5N1 virus, including how it spreads. There are 61 confirmed human cases of bird ...