Influenza is on the rise. Flu activity was "high" or "very high" in 32 states and jurisdictions, as of Dec. 30, according to ...

Add Yahoo as a preferred source to see more of our stories on Google. The new flu variant, H3N2 subclade K, is a mutation of the common flu A subtype, which is often the flu "going around" come late ...

Cases across the country had appeared to decline before new public health data showed upticks in infections.

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 ...

recognizing the key differences in how they start, the severity of fever, and specific signs is crucial for accurate ...

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