Feeling under the weather? You could have Influenza Type A. Here's the difference between Influenza Type A and Type B.

The Influenza A H3N2 virus subclade K represents a change in the basic structure of the influenza virus.

Medical experts debunk flu shot myths: vaccines use inactive virus that cannot cause illness. Discover what side effects actually mean for your immunity.

Subclade K (previously known as J.2.4.1) is gaining attention because it appears to be spreading much earlier in the flu ...

Is it flu A or flu B, and how long is it contagious? Here's what to know about the flu virus running rampant in New Jersey, symptoms, more.

(NEXSTAR) – As we get deeper into flu season, a new type of the influenza virus has been identified, the Centers for Disease Control and Prevention confirms. The new strain is a variation of influenza ...

A fast-spreading new flu strain is gaining a reputation as a monstrous “super flu.” The mutation of influenza A(H3N2) called subclade K is driving up infections across the country, including in New ...

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

All viral activity benchmarks have gone down, except for a slight increase in the death rate. Here's what to know about the ...

A group of volunteers spent days locked in a small hotel room with people actively infected with flu. They played games, ...