Skip to main content
VaccineWatch
VaccinesSymptomsStatesAnalysisToolsDashboardCompare

VaccineWatch

Transparent access to VAERS data for informed decision-making. We present the data as-is, with appropriate context and disclaimers.

Explore Data

  • Vaccines
  • Symptoms
  • Manufacturers
  • States
  • Dashboard
  • Compare Tool
  • Search

Deep Dives

  • The Denominator Problem
  • Onset Timing
  • Lot Number Analysis
  • COVID Impact
  • Myocarditis
  • Death Reports
  • Interactive Tools
  • All 23 Articles →

Resources

  • About
  • Methodology
  • FAQ
  • Glossary
  • Side Effects Guide
  • Vaccine Schedule
  • Vaccine Safety
  • Safety Timeline
  • Adverse Events
  • Is VAERS Reliable?
  • Report an Event
  • Disclaimer
  • VAERS Official Site ↗

Sister Sites

  • OpenMedicaid
  • OpenFeds
  • OpenSpending
  • OpenMedicare
  • OpenLobby
  • TheDataProject.ai

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. HPV (Gardasil 9)
  4. Extra dose administered
HPV (Gardasil 9)×Extra dose administered

Extra dose administered Reports for HPV (Gardasil 9)

#25 most reported symptom for this vaccine

695
Reports
0
Deaths
0
Hospitalizations
0
Mortality Rate
%
0
Hosp. Rate
%

Extra dose administered and HPV (Gardasil 9)

Extra dose administered has been reported 695 times in association with HPV (Gardasil 9) vaccination in VAERS. This represents 2.6% of all 26,909 reports for this vaccine.

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

Extra dose administered is the #25 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 695 reports of Extra dose administered 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 Extra dose administered occurred after vaccination, not that the vaccine caused it.
•Background rates: Extra dose administered 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

Urticaria731 reportsImmediate post-injection reaction720 reportsInappropriate schedule of drug administration666 reportsWrong product administered620 reports

Quick Facts

Reports:695
Deaths:0
Hospitalizations:0
% of Vaccine:2.6%
Rank:#25 of 1593

Related Pages

HPV (Gardasil 9) OverviewExtra dose administered (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.