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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. HPV (Gardasil 9)
  4. Immune thrombocytopenic purpura
HPV (Gardasil 9)×Immune thrombocytopenic purpura

Immune thrombocytopenic purpura Reports for HPV (Gardasil 9)

#296 most reported symptom for this vaccine

32
Reports
0
Deaths
27
Hospitalizations
0
Mortality Rate
%
84.4
Hosp. Rate
%

Immune thrombocytopenic purpura and HPV (Gardasil 9)

Immune thrombocytopenic purpura has been reported 32 times in association with HPV (Gardasil 9) vaccination in VAERS. This represents 0.1% of all 26,909 reports for this vaccine.

Among these reports, 0 mentioned death (0.00%) and 27 involved hospitalization (84.4%).

Immune thrombocytopenic purpura is the #296 most frequently reported symptom for HPV (Gardasil 9) out of 1593 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 32 reports of Immune thrombocytopenic purpura after HPV (Gardasil 9) 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 Immune thrombocytopenic purpura occurred after vaccination, not that the vaccine caused it.
•Background rates: Immune thrombocytopenic purpura 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

Electrocardiogram abnormal32 reportsOff label use32 reportsElectroencephalogram abnormal32 reportsAdverse event31 reports

Quick Facts

Reports:32
Deaths:0
Hospitalizations:27
% of Vaccine:0.1%
Rank:#296 of 1593

Related Pages

HPV (Gardasil 9) OverviewImmune thrombocytopenic purpura (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.