Flu season is not over yet, experts warn. Is there a second wave coming? Here's how to protect yourself as influenza keeps spreading.

A mutated strain of influenza A, H3N2 subclade K, is surging worldwide, sparking concern about a severe flu season in the U.S. Here's what to symptoms to look out for.

The sudden appearance of this symptom could be your body's alarm bell going off, a top infectious disease MD explains.

Add Yahoo as a preferred source to see more of our stories on Google. Sneezing? Feeling congested? Coughing? Are these signs of flu season, a cold or allergies, or are they symptoms of COVID-19? What ...

That tickle in your throat or runny nose may be much more than a common cold; it could be the flu (or worse, COVID-19), any of which could derail your Christmas and New Year's Eve plans. Common cold, ...

A new flu variant fueling a fast-paced rise in cases across the state has brought with it some symptoms unlike those many have come to associate with the virus. As cases reach "very high" levels, a ...

Flu activity remains elevated across Tennessee, with parts of East Tennessee reporting some of the highest levels of ...

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

The 2025-26 flu season is surging with an increase in influenza-like illness across the U.S. — and in Michigan — with a new variant known as subclade K. The spread of influenza-like illness has ...