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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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  4. Cardiac monitoring abnormal
COVID-19 Vaccine×Cardiac monitoring abnormal

Cardiac monitoring abnormal Reports for COVID-19 Vaccine

#883 most reported symptom for this vaccine

454
Reports
5
Deaths
140
Hospitalizations
1.1
Mortality Rate
%
30.8
Hosp. Rate
%

Cardiac monitoring abnormal and COVID-19 Vaccine

Cardiac monitoring abnormal has been reported 454 times in association with COVID-19 Vaccine vaccination in VAERS. This represents 0.0% of all 1,121,388 reports for this vaccine.

Among these reports, 5 mentioned death (1.10%) and 140 involved hospitalization (30.8%).

Cardiac monitoring abnormal is the #883 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 454 reports of Cardiac monitoring abnormal 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), Cardiac monitoring abnormal appears in only 0.0% of reports.

The mortality rate of 1.10% warrants monitoring, though VAERS deaths represent temporal associations, not confirmed causal links.

Important Context

•Association, not causation: These reports show Cardiac monitoring abnormal occurred after vaccination, not that the vaccine caused it.
•Background rates: Cardiac monitoring abnormal 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

Conjunctivitis459 reportsScratch458 reportsVaccination site discolouration454 reportsCystitis453 reports

Quick Facts

Reports:454
Deaths:5
Hospitalizations:140
% of Vaccine:0.0%
Rank:#883 of 9223

Related Pages

COVID-19 Vaccine OverviewCardiac monitoring abnormal (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.