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

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 ...

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

Feeling under the weather? You could have Influenza Type A. Here's the difference between Influenza Type A and Type B.

As seasonal influenza cases continue to spike across the globe, experts are warning that multiple respiratory viruses and ...

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

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 ...