Feeling under the weather? You could have Influenza Type A. Here's the difference between Influenza Type A and Type B.

But the most important difference between the two is that type A viruses can cause pandemics because of how often and quickly ...

Is it flu A or flu B, and how long is it contagious? Here's what to know about the flu virus running rampant in New Jersey, symptoms, more.

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 ...

A new flu strain has been detected, with the variant dubbed influenza A subclade K. How severe is the strain and does the ...

Flu cases and hospitalizations are surging, already breaking last season's records. Here's where activity is highest, what ...

A late-emerging influenza A mutation known as subclade K weakened protection, but doctors say vaccination still reduces ...