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.
Influenza, Seasonal (Flulaval Quadrivalent)
Manufacturers:
About Influenza, Seasonal (Flulaval Quadrivalent)
Influenza, Seasonal (Flulaval Quadrivalent) has 52,111 reports in VAERS spanning from 1990 to 2026.
Of these reports, 302 mentioned death, 2,421 involved hospitalization, and 9,141 required emergency department visits.
This vaccine is manufactured by: Sanofi Pasteur, GlaxoSmithKline, Seqirus.
This vaccine accounts for 2.6% of all 1,983,260 reports in the VAERS database.
Reporting Rate
This vaccine averages 3,722 reports per year over 14 years of reporting (2013–2026).
Understanding These Numbers
Most Reported Symptoms
Top Reporting States
Reports by Year
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Related Analysis
Data Source
This data comes from the Vaccine Adverse Event Reporting System (VAERS), jointly managed by CDC and FDA.