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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. Multisystem inflammatory syndrome in adults
COVID-19 Vaccine×Multisystem inflammatory syndrome in adults

Multisystem inflammatory syndrome in adults Reports for COVID-19 Vaccine

#3516 most reported symptom for this vaccine

33
Reports
5
Deaths
20
Hospitalizations
15.15
Mortality Rate
%
60.6
Hosp. Rate
%

Multisystem inflammatory syndrome in adults and COVID-19 Vaccine

Multisystem inflammatory syndrome in adults has been reported 33 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 (15.15%) and 20 involved hospitalization (60.6%).

Multisystem inflammatory syndrome in adults is the #3516 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 33 reports of Multisystem inflammatory syndrome in adults 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), Multisystem inflammatory syndrome in adults appears in only 0.0% of reports.

The 15.15% 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 Multisystem inflammatory syndrome in adults occurred after vaccination, not that the vaccine caused it.
•Background rates: Multisystem inflammatory syndrome in adults 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

Uterine cancer33 reportsUltrasound lymph nodes33 reportsProcedural failure33 reportsSuperficial inflammatory dermatosis33 reports

Quick Facts

Reports:33
Deaths:5
Hospitalizations:20
% of Vaccine:0.0%
Rank:#3516 of 9223

Related Pages

COVID-19 Vaccine OverviewMultisystem inflammatory syndrome in adults (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.