Content Writer: Influenza Vaccination Protects Children from Severe Flu Outcomes, Post-Pandemic Study Finds

Influenza vaccination continues to protect children from influenza-related outpatient visits and hospitalizations, according to post-pandemic data published in Pediatrics.

The findings, based on data from seven pediatric medical centers participating in the CDC’s VISION Vaccine Effectiveness Network, show that flu vaccine effectiveness ranged from 34% to 60% among children and adolescents from 2021 to 2024, with protection levels comparable to pre-pandemic seasons.

Samantha M. Olson, MPH, an epidemiologist in the CDC’s influenza division, emphasized the importance of the results in an interview with Healio, stating, “We have had really severe recent seasons for flu, particularly in children,” and added that the study “adds to the growing body of evidence showing how protective flu vaccines can be for infants, children and adolescents, and this includes even the most severe outcomes.”

The research, published in the April 2026 issue of Pediatrics, analyzed outpatient and hospitalization records from the 2021–2022 through 2023–2024 influenza seasons, confirming that vaccination significantly reduced the risk of flu-related medical visits across all age groups of children and adolescents.

Olson and her colleagues noted that despite lower vaccination rates during the 2022–2023 season compared to pre-pandemic levels, the vaccine still provided substantial protection, reinforcing the value of annual immunization even in years with suboptimal uptake.

The study contributes to ongoing efforts by public health officials to improve flu vaccine confidence and access, particularly as the CDC continues to recommend that everyone 6 months and older receive a seasonal flu vaccine each year.

While the vaccine does not prevent all infections, the data consistently show that vaccinated children are far less likely to experience severe outcomes requiring urgent care, emergency department visits, or hospitalization.

Researchers concluded that sustained efforts to strengthen vaccine recommendations from clinicians and improve parental awareness remain critical to maximizing the public health benefits of influenza vaccination in pediatric populations.