(NEXSTAR) – The flu is spreading far and wide across the U.S. – and influenza A is largely to blame. Of all the flu tests reported to the Centers for Disease Control and Prevention since the start of ...

Japan’s health authorities have declared an influenza epidemic, with thousands of people infected with the respiratory virus.

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 influenza is the same. There are some notable differences between flu A and ...

The influenza A virus (IAV) has been the cause of six major flu pandemics, responsible for 50 to 100 million deaths globally.

VIVIAN, LA - DECEMBER 12: With a temperature of 103.8, Asa Moore, 6, of Vivian, Louisiana is examined by John Messier, a physician's assistant, at the North Caddo Surgical and Medical Center for ...

Flu season kicks off in October. How bad will it be? The Centers for Disease Control and Prevention offers its prediction.

As flu season nears, experts encourage people to get their annual flu vaccine. Here's the best time to get the flu shot, how long it lasts, side effects and more.

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. (NEXSTAR) – The flu is spreading far and ...