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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.

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  3. COVID-19 Vaccine
  4. Generalised tonic-clonic seizure
COVID-19 Vaccine×Generalised tonic-clonic seizure

Generalised tonic-clonic seizure Reports for COVID-19 Vaccine

#681 most reported symptom for this vaccine

667
Reports
26
Deaths
224
Hospitalizations
3.9
Mortality Rate
%
33.6
Hosp. Rate
%

Generalised tonic-clonic seizure and COVID-19 Vaccine

Generalised tonic-clonic seizure has been reported 667 times in association with COVID-19 Vaccine vaccination in VAERS. This represents 0.1% of all 1,121,388 reports for this vaccine.

Among these reports, 26 mentioned death (3.90%) and 224 involved hospitalization (33.6%).

Generalised tonic-clonic seizure is the #681 most frequently reported symptom for COVID-19 Vaccine out of 9223 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 667 reports of Generalised tonic-clonic seizure after COVID-19 Vaccine vaccination may seem alarming, but context is critical. With 1,121,388 total reports for this vaccine (representing many millions of doses), Generalised tonic-clonic seizure appears in only 0.1% of reports.

The mortality rate of 3.90% 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

Neutrophil count670 reportsDiabetes mellitus670 reportsRespiratory arrest666 reportsEmotional distress663 reports

Quick Facts

Reports:667
Deaths:26
Hospitalizations:224
% of Vaccine:0.1%
Rank:#681 of 9223

Related Pages

COVID-19 Vaccine 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.