NEW YORK (AP) — As the U.S. flu season winds down, health officials say the flu vaccine didn’t work very well, with one of its worst effectiveness rates in more than a decade. A new strain that ...

Pediatric flu vaccines significantly reduce the number of childhood cases of influenza, new research from Harvard Medical ...

Influenza is a seasonal condition that causes coughing, sneezing, mild fever and aches in most cases. However, it can ...

Every year, flu vaccines are updated to match the flu viruses expected to circulate. For 2026, the vaccine focuses on several influenza strains that research predicts will be most prevalent. This ...

The efficacy of flu shots is not always the same and it’s not always optimal. Some years, they can reduce the risk of illness by as little as 20% to 30%. Subscribe to read this story ad-free Get ...

This transcript was prepared by a transcription service. This version may not be in its final form and may be updated. Jessica Mendoza: Liz, we're both here in DC, and I don't know about you, but I ...

The United States is facing one of its most severe flu seasons in decades, data show. Infections and hospitalizations are surging, driven by a new mutated influenza A variant, H3N2 "subclade K." ...

Update: The FDA reversed its decision on Feb. 18 and agreed to consider Moderna's application. Read the latest here. Our earlier story is below. The Food and Drug Administration is refusing to ...