Subclade K, a variant of flu type A H3N2, has caught medical professionals off-guard. It already has spread rapidly in ...

A second U.S. resident has died from the bird flu. The Washington Department of Health reported that the Grays Harbor County ...

After saying last month it had discontinued its weekly flu report, the Arkansas Department of Health has reversed course, ...

The person, who had been hospitalized in King County since early November, died on Nov. 21, health officials said.

In a Phase 3 trial of more than 18,000 volunteers across three countries, an mRNA influenza vaccine from Pfizer has ...

A new and potentially more severe variant of the flu, known as H3N2 subclade K, has reached the United States, prompting ...

The RSV shot isn't suggested for everyone like the flu vaccine is. Here's who is at risk and how to get a shot.

A new strain of the flu called subclade K could make for a particularly nasty flu season across the country, according to public health experts. The strain already caused Japan to declare an influenza ...

Although bird flu infections in humans remain rare, this case marks a significant development in flu surveillance in the U.S.

While flu levels remain low across Connecticut, health care officials say they are expecting numbers to spike during the holiday season.

An early analysis suggests current vaccines may still be somewhat effective against the new version of the flu ...

Dr. Jayne Morgan, cardiologist and Vice President of Medical Affairs at Hello Heart, joined FOX 5 NY to discusses a flu ...