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 ...

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.

Last week, the Trump administration announced changes to the recommended childhood vaccination schedule by the Centers for Disease Control and Prevention, removing overall recommendations for ...

U.S. flu infections showed signs of a slight decline last week, but health officials say it is not clear that this severe flu ...

TWO OF THE FOUR CHILDREN WHO HAVE DIED FROM THE FLU ARE FROM HERE IN THE CITY OF BOSTON. AND CITY HEALTH OFFICIALS SAY TWO OF ...

👋 Welcome to 5 Things PM! With the flu making people miserable from coast to coast, you may be wondering: Will a shot even help? Is it riskier than getting sick? We break down the most common vaccine ...

An Ashland, Massachusetts family is warning others to take the flu seriously, after their 4-year-old daughter almost died. Back in December, Caitlin Lyons' 4-year-old daughter Althea woke her up in ...

LOUISVILLE, Ky. — Doctors in Louisville are warning families to brace for a rough flu season. In Jefferson County, the Health Department has recorded 3,770 flu cases since the end of September 2025, ...