A new flu variant is causing a severe flu season in the UK and Japan; now scientists are waiting to see how that will affect ...

The mutated strain, known as subclade K, is causing a surge in cases in the United Kingdom, Canada, and Japan. Here's what to know.

Massachusetts could be headed for a sharp uptick in flu cases in the coming weeks, public health experts warn, as a newly ...

The United States may be heading into its second severe flu season in a row, driven by a mutated strain called subclade K ...

A new type of seasonal flu virus is raising concerns among health officials as winter approaches. Here's what to know about ...

The NHS has issued a 'please don't visit us' hospital plea to anyone experiencing two symptoms as cases of a winter bug ...

The states top public health official joined GBH's Morning Edition to discuss the flu subtype H3N2, and how you can protect ...