Received Nov 25, 2025
| Type | Name | Manufacturer | Dose | Lot | Route / Site |
|---|---|---|---|---|---|
| MNP | MENINGOCOCCAL CONJUGATE (PENMENVY) | GLAXOSMITHKLINE BIOLOGICALS | UNK | 5S723 | — |
Only diluent administered; Only diluent administered; This non-serious case was reported by a nurse via call center representative and described the occurrence of inappropriate preparation of medication in a patient who received Men ABCWY NVS (Penmenvy) (batch number 5S723, expiry date 30-MAR-2028) for prophylaxis. On 14-NOV-2025, the patient received Penmenvy. On 14-NOV-2025, 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: 21-NOV-2025 Nurse Practitioner reported that a patient received diluent Meningococcal B only of Penmenvy, it was not mixed with the powder. Caller did not feel comfortable providing any patient demographics or giving consent to follow up with Safety Team until she consulted with her supervisor. Nurse Practitioner called back and provided date of administration, lot number and expiration date for the vaccine.