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

Although this year’s flu vaccine doesn’t protect as well against the dominant subclade K strain, doctors still say that ...

Have you been sick since the new year started? You're not alone; here's what to know about new H3N2 flu strain and its ...

While vaccines may not fully protect everyone, public health experts say they’re still proven to help prevent serious illness ...

California officials warn of an increase in flu-related hospitalizations and confirm a second severe-flu-related death.

Viruses can change and alter their genetic make-up. When these changes occur, the virus may become more or less of a threat to the human host. Virologists are therefore interested in tracking the ...