At least 52 children have died in the US flu season so far, most unvaccinated, as cases surge nationwide. The CDC reports 20 million infections, driven by a mutated influenza A strain. Experts warn ...

The flu has infected "significantly" more Americans this winter than usual, says a doctor and infectious disease specialist.

At least 19 million people in the nation have caught the flu bug and about 10,000 have died from flu complications in the 2025-2026 flu season, according to the Association of Ame ...

Learn how Subclade K, a variant of the influenza A virus, is affecting immune responses and contributing to this year’s intense flu season.