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The U.S. winter virus season is in full force, and by one measure is the most intense in 15 years.

The newer variant of avian influenza that recently infected dairy cattle in Nevada has a genetic change that’s thought to ...

While we often refer to it as "the flu," the influenza virus has several strains, with flu A and flu B considered the most common and the most severe.

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

Outpatient health care visits for flu-like illnesses are at their highest levels in 15 years, according to data updated ...

While the risk to humans of exposure from cows or milk remains low, this new flu spillover from birds into cows raises the need for continued surveillance.

Until last week, all bird flu in dairy herds had been identified as the B3.13 variant, which was believed to have come from ...

It feels like everyone is sick right now. And while that is a slight exaggeration, the real situation isn’t too sunny either.

It's flu season right now, and the U.S. is in the midst of a wave that's straining hospitals. But not all influenza is the ...