Since early 2024, the U.S. has logged 66 human cases of H5N1. Scientists are keeping a watchful eye on the virus’s spread as we enter a new year.

As health officials track bird flu cases, we're getting answers about what this could mean for human transmission.

Trump's pick for health secretary has a record of attacking vaccines. In fact he's even taken direct aim at bird flu shots.

Researchers have identified nine mutations in a bird flu strain from a person in Texas. Bad news: this strain is more capable of causing disease and replicates better in the brain. Good news: approved ...

Over the past several months, bird-flu numbers have been steadily ticking up, especially among farmworkers who interact ...

The latest confirmation likely reflects follow-up testing of a San Francisco child whose exposure to the virus is still under ...

The nation's first human death due to the bird flu occurred this month, the latest development in a global outbreak that, ...

One of the earliest strains of bird flu isolated from a human in Texas shows a unique constellation of mutations that enable ...