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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. Right ventricular ejection fraction decreased
COVID-19 Vaccine×Right ventricular ejection fraction decreased

Right ventricular ejection fraction decreased Reports for COVID-19 Vaccine

#3329 most reported symptom for this vaccine

37
Reports
6
Deaths
27
Hospitalizations
16.22
Mortality Rate
%
73
Hosp. Rate
%

Right ventricular ejection fraction decreased and COVID-19 Vaccine

Right ventricular ejection fraction decreased has been reported 37 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, 6 mentioned death (16.22%) and 27 involved hospitalization (73.0%).

Right ventricular ejection fraction decreased is the #3329 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 37 reports of Right ventricular ejection fraction decreased 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), Right ventricular ejection fraction decreased appears in only 0.0% of reports.

The 16.22% mortality rate among these reports is elevated, but this reflects the severity of the condition itself rather than vaccine causation.

Important Context

•Association, not causation: These reports show Right ventricular ejection fraction decreased occurred after vaccination, not that the vaccine caused it.
•Background rates: Right ventricular ejection fraction decreased 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

Tumour marker test37 reportsTherapeutic product effect incomplete37 reportsTherapeutic embolisation37 reportsBartonella test negative37 reports

Quick Facts

Reports:37
Deaths:6
Hospitalizations:27
% of Vaccine:0.0%
Rank:#3329 of 9223

Related Pages

COVID-19 Vaccine OverviewRight ventricular ejection fraction decreased (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.