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.

Korea is grappling with one of its earliest flu waves in years as a newly dominant H3N2 sub-variant sweeps through schools ...

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 season has begun early, and cases are expected to rise during holiday travel as a fast-spreading H3N2 subclade K strain ...

In 1918, a flu pandemic caused by a strain of H1N1 infected 500 million people worldwide. It was known as the Spanish flu, and at least 50 million people died.

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

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 ...