The Department of Health and Human Services is ending a $766 million contract with the vaccine company Moderna to develop an mRNA vaccine for flu strains with pandemic potential, including bird flu.

The H5N1 bird flu, spreading across all 50 U.S. states, raises concerns about a potential pandemic. The virus has impacted dairy farms, poultry flocks, and humans, with one confirmed human death ...

We’ll go with the more positive news first. Passerines –the types of birds that are generally found around backyard bird feeders–are not dying from bird flu as frequently.

SAO PAULO, May 16 (Reuters) - Brazil, the world's largest chicken exporter, on Friday reported its first case of highly pathogenic avian influenza - also known as bird flu - on a commercial farm ...

Experts urge U.S. to prepare for possible new pandemic as H5N1 bird flu outbreak spreads with dairy animal and human cases. Here's what to know.