It's flu season, but not all influenza is the same. If you're feeling sick, it helps to know the difference between flu A and flu B symptoms, experts say.

It's flu season, but not all influenza is the same. If you're feeling sick, it helps to know the difference between flu A and flu B symptoms, experts say.

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 same.

States across the U.S. are reporting rising rates of influenza-like illness, hinting that flu season is starting early this year.

Both a stomach virus and flu can cause digestive symptoms, such as diarrhea or vomiting. Learn more about the differences and similarities.