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Report #2894070

Received Apr 24, 2026

A note on interpretation. VAERS reports are unverified and may be incomplete or coincidental. A report does not establish that a vaccine caused an event, and counts should not be used to calculate incidence or infer causation. Full disclaimer

Overview

Sex
Female
Age
12 yrs
State
CA
Recovered
Not recovered
Vaccinated
Nov 11, 2025
Onset
Dec 18, 2025
Days to onset
37
Hospital days

Vaccines (2)

TypeNameManufacturerDoseLotRoute / Site
HPV9HPV (GARDASIL 9)MERCK & CO. INC.2Y018416OT
HPV9HPV (GARDASIL 9)MERCK & CO. INC.1OT

Symptoms (7)

Blister ruptureVaccination site discolourationVaccination site erythemaVaccination site massVaccination site scarVaccination site swellingVaccination site vesicles

Symptom narrative

Vaccination site subcutaneous mass; vaccination site scar; vaccination site redness; vaccination site swelling; vaccination site blister; Blister rupture; vaccination site discharge; This Spontaneous report was received from Physician and referred to a 12 -year-old Female patient. The patient's medical history included Asthma. The patient's past medications and concomitant medications were not reported. On 11-Nov-2025, the patient started therapy with Human Papillomavirus Nonavalent (Types 6, 11, 16, 18, 31, 33, 45, 52, 58; S. cerevisiae) (Gardasil 9) (Batch/Lot Number: unkown, expiration date: unknown) dose form was Suspension for injection via Intramuscular. On 18-Dec-2024, the patient received the second dose of GARDASIL 9 (Batch/Lot Number: Y018416, expiration date: 13-Feb-2027) via Intramuscular for routine vaccination. On 18-Dec-2025, the patient experienced vaccination site redness and vaccination site swelling. On an unknown date the patient experienced vaccination site blister, blister rupture (reported as "Caller stated a blister then developed on top of the swelling that eventually popped and was draining a clear, sanguineous fluid for a few weeks") and vaccination site discharge. In approximately 2026 the patient experienced vaccination site scar (reported as "small but prominent scar that I don't think will go away"). The physician reported "although I don't know if that made a difference or if time made it better" and he prescribed the patient an antibiotic (Cephalexin). On 03-Mar-2026, the patient had an ultrasound done and the reading showed a subcutaneous mass. In Mar-2026, the patient recovered from vaccination site mass, blister rupture, vaccination site discharge, vaccination site erythema, vaccination site swelling, vaccination site vesicles. At the time of reporting, the patient had not recovered from vaccination site scar. The causalities for the events vaccination site mass, blister rupture, vaccination site discharge, vaccination site erythema, vaccination site swelling, vaccination site vesicles, vaccination site scar were unknown. The Physician considered the events vaccination site mass, blister rupture, vaccination site discharge, vaccination site erythema, vaccination site swelling, vaccination site vesicles, vaccination site scar to be non-serious.

Medical history

Medical History/Concurrent Conditions: Asthma

Lab data

Test Date: 20260303; Test Name: ultrasound; Result Unstructured Data: The reading showed a subcutaneous mass