A 13-year-old girl in British Columbia who was hospitalized with bird flu for several weeks late last year harbored a mutated version of the virus, according to a report published this week in the New ...

Add Yahoo as a preferred source to see more of our stories on Google. NEW YORK — The predicted surge of influenza cases, driven by the new “subclade K” mutation, is hitting New York emergency rooms as ...

Flu is rising rapidly across the U.S., driven by a new variant of the virus — and cases are expected to keep growing with holiday travel. That variant, known as “subclade K,” led to early outbreaks in ...

Flu cases across Kentucky are surging, primarily affecting children. While symptoms typically span from seven to 10 days, the new strain is frequently lasting for nearly two weeks.

A scientist leading the work on Centivax's universal flu vaccine says it is entering its its human trial phase in Australia.

While current flu shots need to be updated each season, scientists are finding new ways to make vaccine that could last much longer and cover more strains.