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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. Meningococcal B (Trumenba)
  4. Vaccination site swelling
Meningococcal B (Trumenba)×Vaccination site swelling

Vaccination site swelling Reports for Meningococcal B (Trumenba)

#127 most reported symptom for this vaccine

51
Reports
0
Deaths
0
Hospitalizations
0
Mortality Rate
%
0
Hosp. Rate
%

Vaccination site swelling and Meningococcal B (Trumenba)

Vaccination site swelling has been reported 51 times in association with Meningococcal B (Trumenba) vaccination in VAERS. This represents 0.5% of all 11,323 reports for this vaccine.

Among these reports, 0 mentioned death (0.00%) and 0 involved hospitalization (0.0%).

Vaccination site swelling is the #127 most frequently reported symptom for Meningococcal B (Trumenba) out of 869 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 51 reports of Vaccination site swelling after Meningococcal B (Trumenba) 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 Vaccination site swelling occurred after vaccination, not that the vaccine caused it.
•Background rates: Vaccination site swelling 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

Flushing52 reportsVaccination site pain52 reportsAnxiety51 reportsJoint range of motion decreased50 reports

Quick Facts

Reports:51
Deaths:0
Hospitalizations:0
% of Vaccine:0.5%
Rank:#127 of 869

Related Pages

Meningococcal B (Trumenba) OverviewVaccination site swelling (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.