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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. Vaccine Not Specified
  4. Immunisation reaction
Vaccine Not Specified×Immunisation reaction

Immunisation reaction Reports for Vaccine Not Specified

#116 most reported symptom for this vaccine

180
Reports
0
Deaths
6
Hospitalizations
0
Mortality Rate
%
3.3
Hosp. Rate
%

Immunisation reaction and Vaccine Not Specified

Immunisation reaction has been reported 180 times in association with Vaccine Not Specified vaccination in VAERS. This represents 0.6% of all 29,669 reports for this vaccine.

Among these reports, 0 mentioned death (0.00%) and 6 involved hospitalization (3.3%).

Immunisation reaction is the #116 most frequently reported symptom for Vaccine Not Specified out of 2482 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 180 reports of Immunisation reaction after Vaccine Not Specified 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 Immunisation reaction occurred after vaccination, not that the vaccine caused it.
•Background rates: Immunisation reaction 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

Anxiety185 reportsHypertension182 reportsPneumonia175 reportsInflammation175 reports

Quick Facts

Reports:180
Deaths:0
Hospitalizations:6
% of Vaccine:0.6%
Rank:#116 of 2482

Related Pages

Vaccine Not Specified OverviewImmunisation reaction (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.