Subclade K (previously known as J.2.4.1) is gaining attention because it appears to be spreading much earlier in the flu ...

The Influenza A H3N2 virus subclade K represents a change in the basic structure of the influenza virus. One of the first ...

Despite days in close quarters with flu patients, healthy volunteers didn’t get sick – revealing insights into transmission.

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

Cases of the flu have started to decline, according to the CDC, but flu season isn't over yet. We bust some common myths on ways to avoid catching the virus.

Flu season in the U.S. is particularly bad this year, and a new branch of the flu family tree may be to blame. If it feels ...

Health experts say the U.S. flu season appears to be waning with two straight weeks of decline in measures of flu activity.

A particularly infectious subvariant of influenza is keeping emergency room numbers high and causing especially severe ...

Four-year-old Ellie Rudd – who loved mud and getting dressed up and having dance parties with her brother and sisters – died January 6, after the flu and a co-infection with an adenovirus turned into ...

State health officials confirmed a second pediatric death associated with the flu this season. Here's what to know.

California officials warn of an increase in flu-related hospitalizations and confirm a second severe-flu-related death.

With a more severe flu strain circulating on top of other respiratory illnesses like COVID-19, RSV and whooping cough, the percentage of people going to their doctors for flu-like illnesses has ...