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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.

⚠️

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. Pertussis
  4. 2011
Pertussis2011

Pertussis in 2011

28 adverse event reports

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28
Reports
0
Deaths
1
Hospitalizations
17
ER Visits
0
Disabilities

2011 Reporting Summary

In 2011, 28 adverse event reports were filed for Pertussis in VAERS. This represents 18.3% of all 153 reports for this vaccine.

Of these reports, 0 mentioned death, 1 involved hospitalization, 17 required ER visits, and 0 reported disability.

💡 What This Means

In 2011, reporting for Pertussis was within typical ranges. As always, VAERS data reflects reports filed, not confirmed adverse events. Trends should be interpreted alongside vaccination volume and population health data.

All Years for Pertussis

YearReportsDeathsHosp.

Understanding Yearly Data

•Spikes may reflect awareness: Years with unusual activity (e.g., pandemic) often see increased reporting.
•Dose volume matters: More vaccinations given in a year naturally leads to more reports.
•Reporting lag: Some events are reported months after they occur, so recent years may be incomplete.

Quick Facts

Reports:28
Deaths:0
Hospitalizations:1
% of Total:18.3%
Rank (by vol.):#0 of 0 years
Avg/year:0

Related Pages

Pertussis Overview35 Years of ReportingCompare Vaccines

Data Source

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