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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. Polio (Inactivated) (Ipol)
  4. Tonic clonic movements
Polio (Inactivated) (Ipol)×Tonic clonic movements

Tonic clonic movements Reports for Polio (Inactivated) (Ipol)

#440 most reported symptom for this vaccine

28
Reports
1
Deaths
8
Hospitalizations
3.57
Mortality Rate
%
28.6
Hosp. Rate
%

Tonic clonic movements and Polio (Inactivated) (Ipol)

Tonic clonic movements has been reported 28 times in association with Polio (Inactivated) (Ipol) vaccination in VAERS. This represents 0.1% of all 44,360 reports for this vaccine.

Among these reports, 1 mentioned death (3.57%) and 8 involved hospitalization (28.6%).

Tonic clonic movements is the #440 most frequently reported symptom for Polio (Inactivated) (Ipol) out of 1646 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 28 reports of Tonic clonic movements after Polio (Inactivated) (Ipol) vaccination may seem alarming, but context is critical.

The mortality rate of 3.57% warrants monitoring, though VAERS deaths represent temporal associations, not confirmed causal links.

Important Context

•Association, not causation: These reports show Tonic clonic movements occurred after vaccination, not that the vaccine caused it.
•Background rates: Tonic clonic movements 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

Thrombocythaemia28 reportsSkin disorder28 reportsParotitis28 reportsCardio-respiratory arrest28 reports

Quick Facts

Reports:28
Deaths:1
Hospitalizations:8
% of Vaccine:0.1%
Rank:#440 of 1646

Related Pages

Polio (Inactivated) (Ipol) OverviewTonic clonic movements (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.