All viral activity benchmarks have gone down, except for a slight increase in the death rate. Here's what to know about the state of the flu season.

Last fall’s predicted surge of influenza cases, driven by the new “subclade K” mutation, is hitting U.S. emergency rooms as holiday get-togethers put people in close spaces where the flu virus can ...

Add Yahoo as a preferred source to see more of our stories on Google. In the midst of what could be one of the most severe flu seasons on record, Health Secretary Robert F. Kennedy Jr.’s CDC has ...