Doctors are alarmed as H3N2 influenza cases surge earlier than typical seasonal peaks, driven by erratic weather, transitional immunity gaps, and environmental triggers.

A new mutated strain of the common flu, influenza H3N2, subclade K, is spreading across the Northern Hemisphere, including the United States. This particular strain has gained dominance in many ...

The flu...That annual uninvited guest that shows up just in time to ruin holiday plans and make you question your life ...

CLEVELAND (WJW) – It is the latest version of influenza and it has been hitting hard all across the country. The Influenza A H3N2 virus subclade K represents a change in the basic structure of the ...

Flu cases in the U.K. are already triple what they were at this time last year. Here Andreas Philippi (l), Lower Saxony's minister for social affairs, labor, health and equality, gives the flu vaccine ...

A new flu strain that has been dominating cold and flu season overseas is on the rise in the United States. The mutated strain, known as subclade K, originates from the most common flu-causing virus, ...

The effectiveness of this season’s flu vaccine in Canada is 40% against medically attended infection with influenza A (H3N2) ...

The U.S. may be in for yet another rough flu season, particularly as influenza A H3N2 mutated into a new subclade and has been associated with an earlier-than-usual start to flu season in other parts ...

A new influenza A H3N2 mutation called subclade K is causing an alarming rise in flu cases and hospitalizations around the country. Some reports indicate that subclade K brings about a more severe ...

Add Yahoo as a preferred source to see more of our stories on Google. If you've been paying attention to the news lately, you likely have heard about the new strain of severe "super flu" going around ...

The flu epidemic continues to go down. The positivity rate and other benchmarks for the week ending on Jan. 24 have dropped compared with previous weeks, according to the latest data from the Centers ...