You already know about fevers, chills and coughs, but this issue may also occur with a flu B infection.

Flu activity in the United States is finally slowing down, but health experts say this year’s flu vaccine didn't offer as ...

As the U.S. flu season winds down, health officials say the flu vaccine didn’t work very well. It had one of its worst effectiveness rates in more than a decade.

The US FDA’s vaccine advisors have recommended that three new influenza strains be included in next winter’s influenza vaccine, aiming in part to tamp down illness caused by subclade K, a mutated form ...

Prior exposure to one strain of influenza virus may weaken children's ability to mount an effective antibody response against ...

A long-running debate in vaccine design revolves around whether a vaccine should be optimized to prevent the virus from ...

A 13-year-old from Kerrville battles for life after a flu and strep infection led to organ failure and limb amputation.

Virginia health officials report a second pediatric flu death this season in the state's Eastern region, urging vaccinations and good hygiene measures.