The findings show how the H5N1 bird flu virus is evolving in livestock and what that may mean for human health.

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 ...

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 ...

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

Add Yahoo as a preferred source to see more of our stories on Google. As many families are preparing to gather for the holidays, influenza (flu) cases are spiking across the country. According to the ...

Early in a viral disease outbreak, it could be just as important to look at exactly who is getting infected, as well as how ...

WASHINGTON (AP) - 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 ...