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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 (Flumist Quadrivalent)
FLUN43,467 total reports
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Manufacturers:
3,467
Total Reports
17
Deaths
154
Hospitalizations
624
ER Visits
30
Disabilities
About Influenza, Seasonal (Flumist Quadrivalent)
Influenza, Seasonal (Flumist Quadrivalent) has 3,467 reports in VAERS spanning from 1990 to 2026.
Of these reports, 17 mentioned death, 154 involved hospitalization, and 624 required emergency department visits.
This vaccine is manufactured by: MedImmune.
This vaccine accounts for 0.2% of all 1,983,260 reports in the VAERS database.
Reporting Rate
This vaccine averages 248 reports per year over 14 years of reporting (2013–2026).
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.