It may feel like you are surrounded by sniffles and coughs, but flu season activity is still low in many parts of the U.S.

So far, just 36 percent of U.S. children have been vaccinated—down 23 percent from a half-decade earlier, likely due to ...

The latest data on respiratory illness in the United States shows that shoppers and merry-makers are spreading more than just holiday cheer: They’re also passing around germs. In many cases, it’s a ...

The U.S. is seeing a post-Thanksgiving spike in influenza, data released by the Centers for Disease Control and Prevention on ...

The World Health Organization selected the components for the northern hemisphere influenza vaccine between February and ...

Cases of the new “subclade K” super-flu are “ballooning” in the UK, said NHS England. Its latest figures show that the number ...

As we get deeper into flu season, a new type of the influenza virus has been identified, the Centers for Disease Control and ...

Scientists have captured an unprecedented, real-time view of influenza viruses as they move across and slip inside human ...

The flu can also cause a general feeling of fatigue or malaise, Ray says, as well as gastrointestinal issues like diarrhea ...

The WHO is monitoring a fast-evolving flu strain as cases rise worldwide, warning that recent mutations could increase ...

Six hospitals have declared critical incidents after a sharp rise in flu cases, piling pressure on NHS bosses to resolve ...