How long are you contagious with the flu? Experts say you can spread the virus for five to seven days after symptoms start, ...

The flu epidemic continues to go down. The positivity rate and other benchmarks for the week ending on Jan. 24 have dropped ...

Doctronic reports the 2026 flu shot targets prevalent strains, with early fall recommended for vaccination to ensure ...

Learn how Subclade K, a variant of the influenza A virus, is affecting immune responses and contributing to this year’s intense flu season.

Last year, at least one million people in the U.S. were hospitalized for respiratory virus illnesses like the flu or COVID-19, according to the Centers for Disease Control and Prevention. Many of ...

Flu activity has ticked back up slightly in the US, thanks to a very small increase in infections caused by influenza B — viruses distinct from the new subclade K strain that’s been the biggest player ...

Flu is rising rapidly across the U.S., driven by a new variant of the virus — and cases are expected to keep growing with holiday travel. That variant, known as “subclade K,” led to early outbreaks in ...

After a sharp uptick in flu cases in mid-December 2025, flu activity across the U.S. and Canada remains high.

A growing body of research suggests that everything from the shape of your lungs to how you enunciate your Ts and Ks could make you a flu superspreader.

Flu activity is increasing across Los Angeles County, prompting public health officials Friday to urge residents to get ...