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

The CDC estimated there have been at least 7.5 million illnesses in the U.S., 81,000 hospitalizations and 3,100 deaths from ...

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. There are some notable differences between flu A and flu B strains. On ...

This flu season medics have been struck by the uptick of cases involving the type B flu virus, which has been predominating the season for the first time in 27 years. Influenza can be split into four ...

Flu cases are slowly rising in Illinois in the lead-up to holiday gatherings this week, so what should you know before you ...

A more severe and highly contagious new strain of the flu is circulating this season. It's called subclade K, or more ...

Flu season is starting to tick up in the U.S. And, looking at clues from other countries, we may be in for a rough winter. But not all influenza is the same. And there are some notable differences ...