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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. Meningococcal B (Trumenba)
  4. Generalised tonic-clonic seizure
Meningococcal B (Trumenba)×Generalised tonic-clonic seizure

Generalised tonic-clonic seizure Reports for Meningococcal B (Trumenba)

#193 most reported symptom for this vaccine

25
Reports
1
Deaths
2
Hospitalizations
4
Mortality Rate
%
8
Hosp. Rate
%

Generalised tonic-clonic seizure and Meningococcal B (Trumenba)

Generalised tonic-clonic seizure has been reported 25 times in association with Meningococcal B (Trumenba) vaccination in VAERS. This represents 0.2% of all 11,323 reports for this vaccine.

Among these reports, 1 mentioned death (4.00%) and 2 involved hospitalization (8.0%).

Generalised tonic-clonic seizure is the #193 most frequently reported symptom for Meningococcal B (Trumenba) out of 869 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 25 reports of Generalised tonic-clonic seizure after Meningococcal B (Trumenba) vaccination may seem alarming, but context is critical.

The mortality rate of 4.00% warrants monitoring, though VAERS deaths represent temporal associations, not confirmed causal links.

Important Context

•Association, not causation: These reports show Generalised tonic-clonic seizure occurred after vaccination, not that the vaccine caused it.
•Background rates: Generalised tonic-clonic seizure 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

Syringe issue25 reportsInjection site hypoaesthesia25 reportsHypersomnia25 reportsGait inability25 reports

Quick Facts

Reports:25
Deaths:1
Hospitalizations:2
% of Vaccine:0.2%
Rank:#193 of 869

Related Pages

Meningococcal B (Trumenba) OverviewGeneralised tonic-clonic seizure (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.