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.

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, ...

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 ...

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 ...

The CDC says Texas flu is at "very high" levels, as the flu vaccine has been less effective against H3N2 subclade K.

An aggressive strain of influenza is surging in Sarasota, Florida, with one hospital reporting a 30% increase in cases. This ...

Flu cases are slowly rising in Illinois in the lead-up to holiday gatherings this week, so what should you know before you get together with friends and loved ones and how do you know if someone could ...

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

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 Michigan.