Researchers are not just worried about the virus popping up on American farms. Other types are causing trouble around the world. By Apoorva Mandavilli In the United States, the term bird flu has ...

Flu cases and hospitalizations are surging, already breaking last season's records. Here's where activity is highest, what ...

Add Yahoo as a preferred source to see more of our stories on Google. A more severe and highly contagious new strain of the flu is circulating this season. It’s called subclade K, or more popularly ...

State health officials confirmed a second pediatric death associated with the flu this season. Here's what to know.