A highly contagious flu mutation called subclade K is sweeping the nation, raising health concerns about vaccine ...

These are the states seeing the biggest impact from the flu tearing across the nation - The virus is particularly serious for ...

Flu season intensifies as the new H3N2 variant causes severe illness worldwide. Experts urge vaccination, hand-washing and ...

Flu season in America is underway with a new variant called subclade K, recent Centers for Disease Control and Prevention ...

A novel influenza variant called subclade K appears to be driving an uptick in cases and hospitalizations throughout the U.S.

Holiday travel is in full swing and flu cases are ramping up. Some experts are worried about a new flu variant making its way ...

Last year’s flu season was the roughest in nearly a decade. “We generally don’t have two bad flu seasons back to back,” said ...

Changes in the key antigenic regions of H3N2 viruses suggest that the upcoming flu season may require closer attention to ...

The latest data on respiratory illness in the United States shows that shoppers and merry-makers are spreading more than just holiday cheer: They’re also passing around germs. In many cases, it’s a ...

The variant emerged after the 2025-2026 flu vaccine was developed, meaning the current vaccine does not target this specific ...

The new Covid variant is continuing to proliferate around the U.S. — although you might not know it by just checking federal variant-tracking dashboards. Known as NB.1.8.1, the omicron variant has ...