New Mexico, Texas and Nebraska are among the states with the highest number of people showing flu-like symptoms.

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

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

Doctor's visits for flu symptoms are at a 15-year high. Why is this flu season so bad? Doctors discuss flu severity, symptoms and how to stay safe.

Schools in at least two states canceled classes at the start of this week amid a surge in influenza cases nationwide.

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

Cases of the seasonal flu in the U.S. have reached their highest numbers in more than a decade, according to the Centers for Disease Control and Prevention.

The flu can also cause a general feeling of fatigue or malaise, Ray says, as well as gastrointestinal issues like diarrhea ...

The flu vaccine is developed using data monitored from around the world to predict what the most common strain will be. The ...

South Carolina is one of a handful of states with the highest number of flu cases in the United States, according to data ...

The trend of closures continues across the state. Five school districts were closed in Middle Tennessee due to illness and ...

Flu season is hitting North Texas hard. FOX 4's Lori Brown spoke to a family whose 7-year-old son was hospitalized with ...