Infant protection against respiratory syncytial virus (RSV) by maternal RSV vaccination or receipt of RSV monoclonal antibody ...

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

A particularly infectious subvariant of influenza is keeping emergency room numbers high and causing especially severe ...

Flu is making people miserable from coast to coast, thanks in large part to a new strain called subclade K.

If you have a mild illness like a cold, it’s fine to get a flu shot. If you’re already experiencing flu-like symptoms, like running a fever, feeling fatigued or having trouble staying hydrated, you ...

Were you or a loved one sick over the holidays? Here's what to know about new influenza variant and how to stay healthy ...

Flu season in the U.S. is particularly bad this year, and a new branch of the flu family tree may be to blame.

More than 900 Wisconsin residents were hospitalized with the flu the week ending Jan. 3, exceeding peak numbers from last ...