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

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

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 ...

(NEXSTAR) – The flu is spreading far and wide across the U.S. – and influenza A is largely to blame. Of all the flu tests reported to the Centers for Disease Control and Prevention since the start of ...

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 ...