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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 (Fluad Quadrivalent)
FLUA44,184 total reports
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Manufacturers:
4,184
Total Reports
43
Deaths
266
Hospitalizations
469
ER Visits
83
Disabilities
About Influenza, Seasonal (Fluad Quadrivalent)
Influenza, Seasonal (Fluad Quadrivalent) has 4,184 reports in VAERS spanning from 1990 to 2026.
Of these reports, 43 mentioned death, 266 involved hospitalization, and 469 required emergency department visits.
This vaccine is manufactured by: Seqirus.
This vaccine accounts for 0.2% of all 1,983,260 reports in the VAERS database.
Reporting Rate
This vaccine averages 598 reports per year over 7 years of reporting (2020–2026).
Understanding These Numbers
•Reports don't prove causation. They represent temporal associations where someone experienced an event after vaccination.
•Background rates matter. Many conditions occur naturally and may coincidentally happen after vaccination.
•Reporting varies by vaccine. Newer vaccines or those in the news may have higher reporting rates due to increased awareness.
Most Reported Symptoms
Top Reporting States
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Data Source
This data comes from the Vaccine Adverse Event Reporting System (VAERS), jointly managed by CDC and FDA.