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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
  4. Pharyngeal oedema
Meningococcal×Pharyngeal oedema

Pharyngeal oedema Reports for Meningococcal

#196 most reported symptom for this vaccine

13
Reports
0
Deaths
2
Hospitalizations
0
Mortality Rate
%
15.4
Hosp. Rate
%

Pharyngeal oedema and Meningococcal

Pharyngeal oedema has been reported 13 times in association with Meningococcal vaccination in VAERS. This represents 0.3% of all 3,774 reports for this vaccine.

Among these reports, 0 mentioned death (0.00%) and 2 involved hospitalization (15.4%).

Pharyngeal oedema is the #196 most frequently reported symptom for Meningococcal out of 719 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 13 reports of Pharyngeal oedema after Meningococcal 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 Pharyngeal oedema occurred after vaccination, not that the vaccine caused it.
•Background rates: Pharyngeal oedema 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

Injury13 reportsBacterial infection13 reportsBlood glucose increased13 reportsRash papular13 reports

Quick Facts

Reports:13
Deaths:0
Hospitalizations:2
% of Vaccine:0.3%
Rank:#196 of 719

Related Pages

Meningococcal OverviewPharyngeal oedema (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.