That’s why infectious disease experts are telling people to run, not walk, to get this season’s flu shot if they haven’t yet.

Flu cases are rising across the U.S. Here's what you need to know about symptoms, flu duration and the new strain ...

Subclade K, which is circulating in Arizona, has been dubbed a 'super flu' but some experts say that's not an accurate ...

Although this year’s flu vaccine doesn’t protect as well against the dominant subclade K strain, doctors still say that ...

After reporting was delayed due to the holidays, new CDC data shows the flu is spreading, with 33,000 people hospitalized ...

Even without a perfect match, public health experts say the flu vaccine offers important protection against serious ...

While the new findings are encouraging, "vaccines won’t do any good if people don’t get them," one expert said.

The last available tracing data from the CDC found that 91% of the 600 U.S. flu cases that were tested between Dec. 22 and 28 ...

Those infected with the flu are most contagious during the first three days, the CDC said. In some cases, however, people can ...

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

A fourth child flu death has been reported in Massachusetts as new cases of the virus continue to surge, putting a strain on ...

Outbreaks of H5N1, or highly pathogenic avian influenza - commonly known as bird flu - have been confirmed at a commercial ...