Every year, flu vaccines are updated to match the flu viruses expected to circulate. For 2026, the vaccine focuses on several influenza strains that research predicts will be most prevalent. This ...

Flu is surging across most of the U.S. But, amid an early, harsh season, there is a glimmer of promising news: The flu shot may be more effective than experts predicted. Subscribe to read this story ...

This season’s flu is lurking right around the corner. Even if you’ve done the right thing and had the flu shot. Even if you haven’t had the flu for years. Don’t make the mistake of taking this virus ...

The United States is facing one of its most severe flu seasons in decades, data show. Infections and hospitalizations are surging, driven by a new mutated influenza A variant, H3N2 "subclade K." ...

Flu is making people miserable from coast to coast, thanks in large part to a new strain called subclade K. That’s why infectious disease experts are telling people to run, not walk, to get this ...