The U.S. influenza rate is at or near its highest level in at least 15 years and is still on the rise, the U.S. Centers for ...

California hospitals are struggling to keep up with the influx of flu cases. Meanwhile, it is unclear whether the United States will take part in an international flu vaccine meeting later this month.

Low vaccination rates may be contributing to the spread of flu, but data suggests the number of cases so far this season is ...

But if it seems as if everyone you know has gotten sick this winter (or still is), you’re not wrong: It’s been a tough season ...

That's the way one scientist puts it — referring to how infected wild birds survive long enough to spread it to birds and ...

While we often refer to it as "the flu," the influenza virus has several strains, with flu A and flu B considered the most common and the most severe.