The flu shot is doing serious heavy lifting for kids. A new CDC-led study in Pediatrics found that influenza vaccination was 80% effective at preventing flu-related deaths in U.S. children over nearly a decade. Notably, the protection held strong even for kids without underlying health conditions — a group that accounts for roughly half of all pediatric flu deaths.
The flu shot is doing serious heavy lifting for kids. A new CDC-led study published in Pediatrics analyzed nearly nine flu seasons (2016–2025) and found that influenza vaccination was 80% effective at preventing flu-related deaths in U.S. children and teens. The findings are especially striking given that pediatric flu deaths hit their highest recorded number in the 2024–2025 season — a trend researchers link to declining vaccination rates since 2021.
What's particularly notable: the vaccine worked well across the board. Kids without underlying health conditions saw 87% effectiveness against flu death, while those with conditions like neurologic, cardiac, or pulmonary disorders saw 77% effectiveness. That matters because healthy kids make up roughly half of all pediatric flu fatalities — a fact that often surprises parents.
By the Numbers:
Why it matters: Editorialists are urging pediatricians to reframe the flu vaccine conversation with parents — shifting the focus from "preventing infection" to "preventing death." With vaccination rates falling and pediatric flu fatalities rising, this data gives clinicians a powerful, evidence-backed tool to make the case for annual flu shots.
