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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. Tdap (Boostrix)
  4. Swollen tongue
Tdap (Boostrix)×Swollen tongue

Swollen tongue Reports for Tdap (Boostrix)

#175 most reported symptom for this vaccine

171
Reports
0
Deaths
15
Hospitalizations
0
Mortality Rate
%
8.8
Hosp. Rate
%

Swollen tongue and Tdap (Boostrix)

Swollen tongue has been reported 171 times in association with Tdap (Boostrix) vaccination in VAERS. This represents 0.3% of all 52,846 reports for this vaccine.

Among these reports, 0 mentioned death (0.00%) and 15 involved hospitalization (8.8%).

Swollen tongue is the #175 most frequently reported symptom for Tdap (Boostrix) out of 2243 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 171 reports of Swollen tongue after Tdap (Boostrix) 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 Swollen tongue occurred after vaccination, not that the vaccine caused it.
•Background rates: Swollen tongue 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

Tachycardia173 reportsUrinary incontinence173 reportsPertussis167 reportsBlood pressure increased164 reports

Quick Facts

Reports:171
Deaths:0
Hospitalizations:15
% of Vaccine:0.3%
Rank:#175 of 2243

Related Pages

Tdap (Boostrix) OverviewSwollen tongue (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.