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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. Injection site pain
Tdap (Boostrix)×Injection site pain

Injection site pain Reports for Tdap (Boostrix)

#2 most reported symptom for this vaccine

6,680
Reports
4
Deaths
95
Hospitalizations
0.06
Mortality Rate
%
1.4
Hosp. Rate
%

Injection site pain and Tdap (Boostrix)

Injection site pain has been reported 6,680 times in association with Tdap (Boostrix) vaccination in VAERS. This represents 12.6% of all 52,846 reports for this vaccine.

Among these reports, 4 mentioned death (0.06%) and 95 involved hospitalization (1.4%).

Injection site pain is the #2 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 6,680 reports of Injection site pain after Tdap (Boostrix) vaccination may seem alarming, but context is critical.

The mortality rate among these reports is very low at 0.06%, suggesting most cases are non-fatal.

Important Context

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

Injection site erythema8,271 reportsInjection site swelling6,567 reportsPyrexia6,553 reports

Quick Facts

Reports:6,680
Deaths:4
Hospitalizations:95
% of Vaccine:12.6%
Rank:#2 of 2243

Related Pages

Tdap (Boostrix) OverviewInjection site pain (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.