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

Data from the Centers for Disease Control and Prevention shows seasonal flu activity continues to increase across the country ...

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

Schools around the U.S. are closing due to surges of flu and other illnesses which are sickening students and staff. Here's what parents need to know.