Moderna was seeking approval for the vaccine's use in adults over 50.
The United States reported more than 2,000 measles cases in 2025, federal data shows, a higher annual total than the country has seen in decades.
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.
New York City is seeing some of the highest levels in the country.
Chicago-area healthcare providers are stocked up with influenza and COVID-19 vaccines, but some doctors say it's been a tough sell this year.
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.