Key Takeaways This season's flu vaccine didn't work as well as usual, officials sayA new virus strain did not match the shot ...

Interim influenza vaccine effectiveness for the 2025 to 2026 season appears to be lower than in recent influenza seasons, but still provides protection for children and adolescents and for adults, ...

The flu vaccine may not be very effective this winter, according to U.S. health officials who worry this may lead to more serious illnesses and deaths. As flu season begins to ramp up, officials say ...

Dr. Gaurav Shinde gives Giti Noroozi, 85, her vaccinations for COVID and her flu shot at the Walgreens pharmacy in Torrance, Calif., on Sept. 5, 2024. In this photo Noroozi received the Fluzone H,D.