Amidst growing fears of human-to-human transmission, “bird flu” is no longer just a grocery store problem — it’s exposing ...

The winter flu season features two types of influenza. Here's what you need to know about them and how they differ.

Avian influenza viruses come in different subtypes, which are named according to subtle variations in the structure of two key proteins on the surface of the virus: hemagglutinin (H) and neuraminidase ...

A new strain of H5N9 bird flu was detected at a commercial duck operation in California's Merced County. All the ducks were euthanized.