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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)

Tdap (Boostrix)

TDAP52,846 total reports
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Manufacturers:

Sanofi PasteurGlaxoSmithKlineUnknown Manufacturer

Tdap (Boostrix) has 52,846 reports in VAERS spanning from 1990 to 2026. Of these reports, 129 mentioned death, 2,191 involved hospitalization, and 14,141 required emergency department visits. This vaccine is manufactured by: Sanofi Pasteur, GlaxoSmithKline, Unknown Manufacturer. This vaccine accounts for 2.7% of all 1,983,260 reports in the VAERS database.

52,846
Total Reports
129
Deaths
2,191
Hospitalizations
14,141
ER Visits
738
Disabilities

About Tdap (Boostrix)

Tdap (Boostrix) has 52,846 reports in VAERS spanning from 1990 to 2026.

Of these reports, 129 mentioned death, 2,191 involved hospitalization, and 14,141 required emergency department visits.

This vaccine is manufactured by: Sanofi Pasteur, GlaxoSmithKline, Unknown Manufacturer.

This vaccine accounts for 2.7% of all 1,983,260 reports in the VAERS database.

Reporting Rate

This vaccine averages 2,402 reports per year over 22 years of reporting (2005–2026).

Understanding These Numbers

•Reports don't prove causation. They represent temporal associations where someone experienced an event after vaccination.
•Background rates matter. Many conditions occur naturally and may coincidentally happen after vaccination.
•Reporting varies by vaccine. Newer vaccines or those in the news may have higher reporting rates due to increased awareness.

Most Reported Symptoms

1. Injection site erythema(all)
8,271
2. Injection site pain(all)
6,680
3. Injection site swelling(all)
6,567
4. Pyrexia(all)
6,553
5. Pain(all)
5,743
6. Erythema(all)
5,505
7. Pain in extremity(all)
4,962
8. Headache(all)
4,842
9. Dizziness(all)
4,399
10. Nausea(all)
4,054

Top Reporting States

1. California5,299
2. Texas3,367
3. Michigan2,177
4. Pennsylvania2,092
5. New York1,806
6. Florida1,796
7. Ohio1,740
8. North Carolina1,692

Reports by Year

202619
20252,379
20242,326
20232,160
20221,790
20211,680
20201,543
20192,475
20182,393
20172,825

Explore Further

⚖️ Compare TDAP with OthersRead Analysis Articles

Related Analysis

📋 Side Effects Guide →The Denominator ProblemUnderstanding Reporting BiasWhen Do Side Effects Start?Death Reports Deep DiveSerious Outcomes AnalysisMost Common Symptoms

Data Source

This data comes from the Vaccine Adverse Event Reporting System (VAERS), jointly managed by CDC and FDA.