AUGUSTA, Ga. - Flu activity has increased slightly in the United States, driven by a small rise in infections caused by influenza B viruses distinct from the new subclade K strain that has been the ...

This year's influenza season is behaving differently. Across regions from the northern hemisphere to India, H3N2, a subtype of influenza A, is emerging earlier and more actively than usual.

Flu cases are ticking down, but experts warn the U.S. isn't out of the woods yet. Fifteen more children died from the flu in the week ending Jan. 10, bringing the total of pediatric deaths to 32. On ...