Received Sep 2, 2025
| Type | Name | Manufacturer | Dose | Lot | Route / Site |
|---|---|---|---|---|---|
| MENB | MENINGOCOCCAL B (BEXSERO) | NOVARTIS VACCINES AND DIAGNOSTICS | UNK | 5P2P7 | — |
Administered during pregnancy; Bexsero instead of Hep B vaccine; This non-serious prospective pregnancy case was reported by a nurse via call center representative and described the occurrence of wrong vaccine administered in a 25-year-old female patient who received Men B NVS (Bexsero) (batch number 5P2P7, expiry date 31-JAN-2026) for prophylaxis. Co-suspect products included Hepatitis B vaccine for prophylaxis. On 25-JUL-2025, the patient received Bexsero. The patient did not receive Hepatitis B vaccine. On 25-JUL-2025, an unknown time after receiving Bexsero, the patient experienced wrong vaccine administered (Verbatim: Bexsero instead of Hep B vaccine). On an unknown date, the patient experienced vaccine exposure during pregnancy (Verbatim: Administered during pregnancy). The outcome of the wrong vaccine administered and vaccine exposure during pregnancy were not applicable. Pregnancy exposure: Pregnancy Exposure (Bexsero): To mother in second trimester Pregnancy Exposure (Hepatitis B vaccine): To mother in second trimester Pregnancy Outcome: Pregnancy was ongoing 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: 05-AUG-2025 Bexsero was accidentally administered to a 20-week pregnant patient instead of Hepatitis B vaccine, which led wrong vaccine administered. The reporter consented to follow up.