A branch of the H5N1 bird flu family tree that hadn't previously been seen in cattle has now been detected in dairy cows.

UC San Francisco's Rais Vohra, MD, explains recent increase in reported virus infections and the risks of consuming raw cow’s milk.

While it's tragic and alarming to see a massive die-off, it's not uncommon for birds that travel in such large populations.

Bird flu, also known as H5N1, continues to spread among U.S. livestock, driving up egg prices and worrying public health experts.

We also look the consequences for public health and vaccines should RFK Jr. – who is now headed to the Senate for a ...

A new variant of the H5N1 bird flu — the same one that led to the death of a Louisiana man — has for first the first time ...

Two rare bird flu strains have emerged since late January, prompting public health concerns during a freeze on federal health communications.