Important: VAERS reports alone cannot determine if a vaccine caused an adverse event. Reports may contain incomplete, inaccurate, or unverified information. Correlation does not equal causation.
1,067 adverse event reports (+3% vs 2022)
In 2023, 1,067 adverse event reports were filed for Influenza, Seasonal (Fluad Quadrivalent) in VAERS. This represents 25.5% of all 4,184 reports for this vaccine.
Of these reports, 19 mentioned death, 118 involved hospitalization, 131 required ER visits, and 16 reported disability.
Compared to the average of 676 reports per year for this vaccine, 2023 was above average (+58%).
In 2023, reporting for Influenza, Seasonal (Fluad Quadrivalent) was within typical ranges. As always, VAERS data reflects reports filed, not confirmed adverse events. Trends should be interpreted alongside vaccination volume and population health data.
This data comes from the Vaccine Adverse Event Reporting System (VAERS), jointly managed by CDC and FDA.