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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 Conjugate (Menactra)
  4. Injection site vesicles
Meningococcal Conjugate (Menactra)×Injection site vesicles

Injection site vesicles Reports for Meningococcal Conjugate (Menactra)

#177 most reported symptom for this vaccine

112
Reports
0
Deaths
1
Hospitalizations
0
Mortality Rate
%
0.9
Hosp. Rate
%

Injection site vesicles and Meningococcal Conjugate (Menactra)

Injection site vesicles has been reported 112 times in association with Meningococcal Conjugate (Menactra) vaccination in VAERS. This represents 0.3% of all 36,149 reports for this vaccine.

Among these reports, 0 mentioned death (0.00%) and 1 involved hospitalization (0.9%).

Injection site vesicles is the #177 most frequently reported symptom for Meningococcal Conjugate (Menactra) out of 1843 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 112 reports of Injection site vesicles after Meningococcal Conjugate (Menactra) 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 Injection site vesicles occurred after vaccination, not that the vaccine caused it.
•Background rates: Injection site vesicles 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

Red blood cell sedimentation rate normal114 reportsInflammation113 reportsDrug exposure during pregnancy112 reportsHeart rate decreased111 reports

Quick Facts

Reports:112
Deaths:0
Hospitalizations:1
% of Vaccine:0.3%
Rank:#177 of 1843

Related Pages

Meningococcal Conjugate (Menactra) OverviewInjection site vesicles (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.