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

Influenza A, B, C Or D? Flu spreads easily in winter due to crowded indoor spaces, low humidity, and reduced immunity.

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

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 ...

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, ...

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

After weeks of delay, Florida's flu numbers are out—and up. Escambia County is among those experiencing a surge.