As families gather for Thanksgiving, here's what to know to protect your family from the new subclade K flu strain.

U.S. flu rates remain low, but experts are keeping an eye on a new strain that’s been linked to unexpectedly early and severe ...

While flu levels are still low, a strain that's wreaked havoc in the U.K. and Canada is behind most cases so far in the U.S., ...

N-2, also known as Subclade K, is causing significantly more symptoms in older adults and young children, Dr. Ali Raja said.

Last winter's flu season was primarily driven by the H1N1 strain, while the current dominant strain is the H3N2 strain. A ...

Flu activity is escalating across the United States, with early surges abroad and a concerning H3N2 K strain raising alarms. A government shutdown has hampered national tracking, creating a critical ...

Flu vaccines offer protection from a handful of strains that scientists expect will dominate the season.

For the flu, vaccination trends are a little muddier. Some sources have suggested flu vaccinations are down. Over two million ...

A new and potentially more severe variant of the flu, known as H3N2 subclade K, has reached the United States, prompting ...