Received Dec 30, 2025
| Type | Name | Manufacturer | Dose | Lot | Route / Site |
|---|---|---|---|---|---|
| MNP | MENINGOCOCCAL CONJUGATE (PENMENVY) | GLAXOSMITHKLINE BIOLOGICALS | UNK | 499J9 | IM |
Inappropriate Reconstitution Technique; inadvertent administration of only the prefilled syringe of the liquid MenB component; 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 16-year-old male patient who received Men ABCWY NVS (Penmenvy) (batch number 499J9, expiry date 08-OCT-2026) for prophylaxis. On 22-DEC-2025, the patient received Penmenvy (intramuscular) .5 ml. On 22-DEC-2025, an unknown time after receiving Penmenvy, the patient experienced inappropriate preparation of medication (Verbatim: Inappropriate Reconstitution Technique) and inappropriate dose of vaccine administered (Verbatim: inadvertent administration of only the prefilled syringe of the liquid MenB component). 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: 22-DEC-2025 and 23-DEC-2025 The medical assistant to ask about guidance on the inadvertent administration of only the prefilled syringe of the liquid meningococcal serogroup B component of penmenvy.