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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. Abdominal mass
Polio (Inactivated) (Ipol)×Abdominal mass

Abdominal mass Reports for Polio (Inactivated) (Ipol)

#672 most reported symptom for this vaccine

14
Reports
0
Deaths
13
Hospitalizations
0
Mortality Rate
%
92.9
Hosp. Rate
%

Abdominal mass and Polio (Inactivated) (Ipol)

Abdominal mass has been reported 14 times in association with Polio (Inactivated) (Ipol) vaccination in VAERS. This represents 0.0% of all 44,360 reports for this vaccine.

Among these reports, 0 mentioned death (0.00%) and 13 involved hospitalization (92.9%).

Abdominal mass is the #672 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 14 reports of Abdominal mass after Polio (Inactivated) (Ipol) vaccination may seem alarming, but context is critical.

The mortality rate among these reports is very low at 0.00%, suggesting most cases are non-fatal.

Important Context

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

Neurological examination14 reportsAllergy test positive14 reportsSkin test positive14 reportsBiopsy skin abnormal14 reports

Quick Facts

Reports:14
Deaths:0
Hospitalizations:13
% of Vaccine:0.0%
Rank:#672 of 1646

Related Pages

Polio (Inactivated) (Ipol) OverviewAbdominal mass (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.