A 13-year-old girl in British Columbia who was hospitalized with bird flu for several weeks late last year harbored a mutated ...

The Centers for Disease Control and Prevention confirmed the first case of severe bird flu in the U.S. on Wednesday.

Here’s what to know about the United States’ first confirmed severe case of H5N1 avian influenza—and how to protect yourself.

While these mutations don’t currently enable human-to-human transmission, experts warn of increased risks if bird flu mixes ...

The workers experienced mild respiratory symptoms and conjunctivitis (pink eye), according to the Colorado Department of ...

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 ...

Teen's recovery from H5N1 bird flu raises concerns after genetic mutations suggest virus could become more dangerous to ...

A Canadian teen's severe bird flu infection has raised alarms about the rising threat of H5N1. With symptoms like fever, ...

Gov. Newsom declared a state of emergency as the virus continues to infect dairy herds across the country — including more ...

The HPAI H5N1 virus has spread globally, infecting birds, mammals, and some humans. Most human cases are mild.

Doctors say the case of a teen left in critical condition shows H5N1 "can cause severe human illness." Mutations in the virus are deepening concerns about the spread of H5N1.

It’s the first case of H5N1 bird flu in the United States that has been ... “is experiencing severe respiratory illness related to H5N1 infection and is currently hospitalized in critical ...