The first human to have ever been infected with H5N5 strain of bird flu has died, Washington state health officials confirmed late Friday.

For the flu, vaccination trends are a little muddier. Some sources have suggested flu vaccinations are down. Over two million ...

Pfizer's mRNA flu vaccine worked better than a standard flu shot in a large Phase 3 trial, researchers reported.

The mutated strain, known as subclade K, is causing a surge in cases in the United Kingdom, Canada, and Japan. Here's what to ...

When it comes to the upcoming influenza season, there's a potential mismatch between the vaccine and what might circulate, raising the risk that the flu season could be severe. And that risk could be ...