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

Moderna Inc. said Monday its experimental flu shot showed positive results in a late-stage trial.   In a Phase 3 study, the ...

Bird flu has spread around the world, even reaching Antarctica for the first time in 2024, in a threat to poultry flocks, wild birds and mammals, including U.S. dairy cows.

Seasonal flu cases have hit a 15-year high this year— filling hospitals, shutting down schools, and leading to an estimated 19,000 flu-related deaths so far in the United States.

Among children nationwide who were eligible for flu vaccination and with known vaccine status, 90% of the reported U.S. pediatric flu deaths in the ongoing 2024-2025 season — compared to 82% ...