Here's what you need to know about this season's H3N2 flu symptoms, treatment, when to go to the hospital and whether to get ...

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 aggressive influenza A (H3N2) variant has a subclave K that accounts for more than ...

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 ...

After child flu deaths broke a record last winter, the CDC dropped its universal flu shot recommendation for kids. Here's ...

Flu continues to visit misery across the US, with all but four states showing high or very high levels of activity as a new virus strain called subclade K continues to spread.