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

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

While we often refer to it as "the flu," the influenza virus has several strains. Here's what to know about the two most ...

What does it mean to have flu A or flu b this season, and do these types of flu have the same symptoms? Here's what to know about the flu viruses. Influenza activity is high and increasing in ...

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