A new and potentially more severe variant of the flu, known as H3N2 subclade K, has reached the United States, prompting ...

Flu season has hit hard particularly early and in a particularly nasty fashion this year (here's our full update on just how bad this flu season might get), and now you can look at its path by way of ...

This is the earliest flu season onset in a decade, reports ABC News' Alex Perez reports. This bout of the flu has arrived a full four months earlier than 2009's outbreak of the H1N1 "swine flu" virus, ...