Moderna was seeking approval for the vaccine's use in adults over 50.
This flu season seems to be getting worse by the day, according to health officials. The bulk of this year's cases are being linked to a new variant known as subclade K.
It's the season of family get-togethers, but also a season of respiratory viruses.
New York City is seeing some of the highest levels in the country.
Concerns about the spread of influenza are growing in the U.S. as the U.K. sees a flu surge in children and young adults.
As the days in Central California get colder, doctors are seeing more cases of influenza and RSV in children.