Report #2874151

Received Nov 21, 2025

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: Male
Age: 16 yrs
State: FL
Recovered: Unknown
Vaccinated: Nov 12, 2025
Onset: Nov 12, 2025
Days to onset: 0
Hospital days: —

Vaccines (1)

Type	Name	Manufacturer	Dose	Lot	Route / Site
MNP	MENINGOCOCCAL CONJUGATE (PENMENVY)	GLAXOSMITHKLINE BIOLOGICALS	UNK	499J9	—

Symptoms (1)

Product preparation error

Symptom narrative

Powder mixed with sterile water; powder component (vial) of Penmenvy shot was mistakenly mixed with sterile water and administered to a patient; This non-serious case was reported by a other health professional via call center representative and described the occurrence of wrong solution used in drug reconstitution in a 16-year-old male patient who received Men ABCWY NVS (Penmenvy) (batch number 499J9, expiry date 08-OCT-2026) for prophylaxis. On 12-NOV-2025, the patient received Penmenvy. On 12-NOV-2025, an unknown time after receiving Penmenvy, the patient experienced wrong solution used in drug reconstitution (Verbatim: Powder mixed with sterile water) and inappropriate dose of vaccine administered (Verbatim: powder component (vial) of Penmenvy shot was mistakenly mixed with sterile water and administered to a patient). The outcome of the wrong solution used in drug reconstitution and inappropriate dose of vaccine administered were not applicable. This report is made by GSK without prejudice and does not imply any admission or liability for the incident or its consequences. Additional Information: GSK Receipt Date: 17-NOV-2025 No PQC (product quality complaint) reported.