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Transparent access to VAERS data for informed decision-making. We present the data as-is, with appropriate context and disclaimers.

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Data source: VAERS (Vaccine Adverse Event Reporting System)

Data through 2026 · Updated quarterly

Built by TheDataProject.ai · © 2026 VaccineWatch

Important: VAERS accepts reports of adverse events following vaccination. For any given report, there is no certainty that the reported event was caused by the vaccine. Reports may contain information that is incomplete, inaccurate, coincidental, or unverifiable. Most reports to VAERS are voluntary, which means they are subject to biases. This data cannot be used to determine if vaccines cause or contribute to adverse events.

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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.

  1. Home
  2. Vaccines
  3. Influenza, Seasonal (Flumist Quadrivalent)
  4. Incorrect route of drug administration
Influenza, Seasonal (Flumist Quadrivalent)×Incorrect route of drug administration

Incorrect route of drug administration Reports for Influenza, Seasonal (Flumist Quadrivalent)

#307 most reported symptom for this vaccine

4
Reports
0
Deaths
2
Hospitalizations
0
Mortality Rate
%
50
Hosp. Rate
%

Incorrect route of drug administration and Influenza, Seasonal (Flumist Quadrivalent)

Incorrect route of drug administration has been reported 4 times in association with Influenza, Seasonal (Flumist Quadrivalent) vaccination in VAERS. This represents 0.1% of all 3,467 reports for this vaccine.

Among these reports, 0 mentioned death (0.00%) and 2 involved hospitalization (50.0%).

Incorrect route of drug administration is the #307 most frequently reported symptom for Influenza, Seasonal (Flumist Quadrivalent) out of 464 total symptoms.

Disclaimer: VAERS reports describe events that occurred after vaccination but do not establish that the vaccine caused the event. Many reported symptoms may be coincidental or related to underlying conditions.

What This Means

Seeing 4 reports of Incorrect route of drug administration after Influenza, Seasonal (Flumist Quadrivalent) vaccination may seem alarming, but context is critical.

The mortality rate among these reports is very low at 0.00%, suggesting most cases are non-fatal.

Important Context

•Association, not causation: These reports show Incorrect route of drug administration occurred after vaccination, not that the vaccine caused it.
•Background rates: Incorrect route of drug administration may occur naturally at baseline rates in the population, unrelated to vaccination.
•Anyone can report: VAERS accepts reports from anyone — patients, parents, healthcare providers — without requiring medical verification.
•Denominator missing: VAERS counts reports, not rates per dose. Without knowing how many doses were given, raw counts can be misleading. Learn more →

Similarly Ranked Symptoms

C-reactive protein4 reportsMononucleosis heterophile test negative4 reportsFacial paresis4 reportsPericarditis4 reports

Quick Facts

Reports:4
Deaths:0
Hospitalizations:2
% of Vaccine:0.1%
Rank:#307 of 464

Related Pages

Influenza, Seasonal (Flumist Quadrivalent) OverviewIncorrect route of drug administration (All Vaccines)Why Raw Numbers MisleadTop Symptoms Analysis

Data Source

This data comes from the Vaccine Adverse Event Reporting System (VAERS), jointly managed by CDC and FDA.