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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. DTaP
  4. Pneumonitis
DTaP×Pneumonitis

Pneumonitis Reports for DTaP

#881 most reported symptom for this vaccine

12
Reports
9
Deaths
4
Hospitalizations
75
Mortality Rate
%
33.3
Hosp. Rate
%

Pneumonitis and DTaP

Pneumonitis has been reported 12 times in association with DTaP vaccination in VAERS. This represents 0.0% of all 66,714 reports for this vaccine.

Among these reports, 9 mentioned death (75.00%) and 4 involved hospitalization (33.3%).

Pneumonitis is the #881 most frequently reported symptom for DTaP out of 1943 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 12 reports of Pneumonitis after DTaP vaccination may seem alarming, but context is critical.

The 75.00% mortality rate among these reports is elevated, but this reflects the severity of the condition itself rather than vaccine causation.

Important Context

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

Ileus12 reportsApraxia12 reportsSkin papilloma12 reportsImpetigo12 reports

Quick Facts

Reports:12
Deaths:9
Hospitalizations:4
% of Vaccine:0.0%
Rank:#881 of 1943

Related Pages

DTaP OverviewPneumonitis (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.