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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 (Flublok Quadrivalent)
FLUR43,407 total reports
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Manufacturers:
3,407
Total Reports
10
Deaths
86
Hospitalizations
290
ER Visits
44
Disabilities
About Influenza, Seasonal (Flublok Quadrivalent)
Influenza, Seasonal (Flublok Quadrivalent) has 3,407 reports in VAERS spanning from 1990 to 2026.
Of these reports, 10 mentioned death, 86 involved hospitalization, and 290 required emergency department visits.
This vaccine is manufactured by: Protein Sciences Corporation.
This vaccine accounts for 0.2% of all 1,983,260 reports in the VAERS database.
Reporting Rate
This vaccine averages 341 reports per year over 10 years of reporting (2017–2026).
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.