A particularly infectious subvariant of influenza is keeping emergency room numbers high and causing especially severe ...

Flu cases and hospitalizations are surging, already breaking last season's records. Here's where activity is highest, what ...

A new flu strain has been detected, with the variant dubbed influenza A subclade K. How severe is the strain and does the ...

Norovirus, the highly contagious stomach bug that causes vomiting and diarrhea, is surging again. Here's what to expect and ...

A ferocious surge of flu cases is linked in part to a variant that has not been dominant in the past few years — resulting in ...

Health officials say it's not too late to get a flu shot as a severe strain fuels a surge in cases across Texas. The ...

A new flu variant fueling a fast-paced rise in cases across the state has brought with it some symptoms unlike those many ...

A new flu variant, subclade K, is driving an uptick in cases across the U.S. and prolonging influenza seasons in other parts of the world.

Subclade K, which is circulating in Arizona, has been dubbed a 'super flu' but some experts say that's not an accurate ...

Flu cases are rising rapidly across the US due to a new strain called subclade K, a mutated form of the H3N2 influenza A ...

One of the leading triggers for multiple sclerosis (MS) is an infection with the Epstein-Barr virus. However, certain gene variants also play an important role.