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 ...

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

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 ...

Seasonal influenza activity has elevated in California due to a “super flu” strain that has resulted in higher confirmed flu ...

Nearly 9,000 flu cases reported in New Jersey as of the week ending Jan. 3. Here’s what to know about the H3N2 epidemic.