Moderna Inc. said its experimental flu shot showed positive results in a late-stage trial.

Bird flu continues to spread quickly through the U.S. farm system because that system is inherently a viral playground.

Efficacy appeared consistently strong across age groups, flu vaccination status and among people with various risk factors, Moderna said in a statement. The trial enrolled more than 40,800 adults 50 ...

Seasonal flu-related hospitalizations and outpatient visits reached a 15-year high during the 2024-25 season, according to the Centers for Disease Control and Prevention.

ATLANTA -- The Trump administration's new vaccine advisers endorsed Thursday this fall's flu vaccinations -- only certain shots free of a preservative that inoculation skeptics claim is tied to ...

Moderna on Monday said its experimental mRNA-based flu vaccine produced a stronger immune response than a currently available shot in a late-stage trial, clearing a path forward for the product ...

Flu shots contain tiny amounts of inactive, or dead, flu virus. They also contain other ingredients, such as stabilizers, preservatives, and substances that encourage an immune response.

The Trump administration’s new vaccine advisers on Thursday endorsed this fall’s flu vaccinations for just about every American but threw in a twist: Only use certain shots free of an ...

A CDC panel recommended against flu vaccines with thimerosal, a preservative falsely linked to autism. Experts warn the decision may raise vaccine costs unnecessarily.