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.
513 adverse event reports (-6% vs 2021)
In 2022, 513 adverse event reports were filed for Influenza, Seasonal (Flublok Quadrivalent) in VAERS. This represents 15.1% of all 3,407 reports for this vaccine.
Of these reports, 2 mentioned death, 11 involved hospitalization, 33 required ER visits, and 7 reported disability.
Compared to the average of 463 reports per year for this vaccine, 2022 was above average (+11%).
In 2022, reporting for Influenza, Seasonal (Flublok 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.