Report #2900717

Received Jun 19, 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: Male
Age: Age unknown
State: WA
Recovered: Unknown
Vaccinated: Jun 11, 2026
Onset: Jun 11, 2026
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 issue

Symptom narrative

Only diluent administered; Only diluent administered; This non-serious case was reported by a other health professional via call center representative and described the occurrence of inappropriate preparation of medication in a 20-year-old male patient who received Men ABCWY NVS (Penmenvy) suspension for injection in pre-filled syringe (batch number 499J9 with expiry date 08-OCT-2026) for prophylaxis. On 11-JUN-2026, the patient received Penmenvy. On 11-JUN-2026, an unknown time after receiving Penmenvy, the patient experienced inappropriate preparation of medication (Verbatim: Only diluent administered) and inappropriate dose of vaccine administered (Verbatim: Only diluent administered). The outcome of the inappropriate preparation of medication 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: 15-JUN-2026 Reporter called to report inadvertent administration of only prefilled syringe of the liquid MenB component of Penmenvy to a patient.