Influenza levels in the US are the highest they've been in 15 years amid winter weather and a second wave of the virus.

The CDC tracks flu activity using reports of doctor’s visits ... Wastewater surveillance can also indicate the level of viral ...

With respiratory illness season at its peak, the latest CDC data shows a significant rise in flu cases nationwide, while COVID-19 cases decline and RSV activity continues to wane. According to the CDC ...

Health experts are seeing signs of a much smaller wave of U.S. COVID-19 cases this winter than in previous years, which could ...

The Centers for Disease Control and Prevention reports that flu cases in the United States this season are at their highest ...

But if it seems as if everyone you know has gotten sick this winter (or still is), you’re not wrong: It’s been a tough season ...

a variant of H3N2 and a B flu strain from a particular lineage, the CDC explains. Previously, they also included a B strain ...

Levels of influenza nationwide are now at the highest they have been since the peak of the 2009 swine flu pandemic, according ...

It's an unusual winter for respiratory illnesses. The flu is peaking twice: once in early January and again in February.