Flu A affects both humans and animals, while flu B affects only humans. You may notice that flu A tends to appear earlier in ...

We're in the midst of flu season, and the U.S. is facing a wave that's straining hospitals and closing schools. But not all ...

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 ...

Influenza, commonly known as the flu, is a contagious respiratory illness caused by the influenza virus. According to the Centers for Disease Control and Prevention (CDC), there are four types of flu ...