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 winter flu season features two types of influenza. Here's what you need to know about them and how they differ.

Influenza is surging in the U.S., with doctor visits for flu symptoms at a 15-year high. Why is this flu season so bad?

Says a pediatric infectious disease physician, “Our expectation is that we’re going to have several more weeks yet of a lot ...

The Minnesota Department of Health (MDH) has issued updated recommendations for handling influenza-like illness in child-care settings and early-childhood education programs that serve children ...

Influenza is a highly contagious viral infection that affects the respiratory system. Although often dismissed as a seasonal ...

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

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

If you have severe flu symptoms, you’re in a high-risk group, or you have concerns about your illness, always consult with a doctor. High-risk groups include people over 65, children under 2 ...

Two children have died of flu in North Carolina, according to the North Carolina Department of Health and Human Services.