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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.

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  4. Similar reaction on previous exposure to drug
DT×Similar reaction on previous exposure to drug

Similar reaction on previous exposure to drug Reports for DT

#198 most reported symptom for this vaccine

6
Reports
0
Deaths
0
Hospitalizations
0
Mortality Rate
%
0
Hosp. Rate
%

Similar reaction on previous exposure to drug and DT

Similar reaction on previous exposure to drug has been reported 6 times in association with DT vaccination in VAERS. This represents 0.2% of all 2,714 reports for this vaccine.

Among these reports, 0 mentioned death (0.00%) and 0 involved hospitalization (0.0%).

Similar reaction on previous exposure to drug is the #198 most frequently reported symptom for DT out of 350 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 reports of Similar reaction on previous exposure to drug after DT 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 Similar reaction on previous exposure to drug occurred after vaccination, not that the vaccine caused it.
•Background rates: Similar reaction on previous exposure to drug 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 vesicles6 reportsLoss of consciousness6 reportsNuclear magnetic resonance imaging6 reportsImmediate post-injection reaction6 reports

Quick Facts

Reports:6
Deaths:0
Hospitalizations:0
% of Vaccine:0.2%
Rank:#198 of 350

Related Pages

DT OverviewSimilar reaction on previous exposure to drug (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.