Received Feb 23, 2026
| Type | Name | Manufacturer | Dose | Lot | Route / Site |
|---|---|---|---|---|---|
| MEN | MENINGOCOCCAL (NO BRAND NAME) | UNKNOWN MANUFACTURER | UNK | UNK | — |
Suspected vaccination failure; Senior onset, meningitis; This serious case was reported by a consumer via interactive digital media and described the occurrence of vaccination failure in a patient who received Men B NVS (Meningococcal B vaccine) for prophylaxis. On an unknown date, the patient received Meningococcal B vaccine. On an unknown date, an unknown time after receiving Meningococcal B vaccine, the patient experienced vaccination failure (Verbatim: Suspected vaccination failure) (serious criteria GSK medically significant) and meningitis (Verbatim: Senior onset, meningitis) (serious criteria GSK medically significant). The outcome of the vaccination failure and meningitis were not reported. It was unknown if the reporter considered the vaccination failure and meningitis to be related to Meningococcal B vaccine and Meningococcal B Vaccine Pre-Filled Syringe Device. The company considered the vaccination failure and meningitis to be unrelated to Meningococcal B vaccine and Meningococcal B Vaccine Pre-Filled Syringe Device. 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: 14-Feb-2026 This case was reported by a patient via interactive digital media. This case was considered as suspected vaccination failure as details regarding time to onset and laboratory confirmation regarding meningitis were unknown at the time of reporting. The batch number was not provided, and unable to contact the reporter.; Sender's Comments: A case of Vaccination failure and Meningitis, unknown time after receiving Meningococcal B vaccine and Meningococcal B Vaccine Pre-Filled Syringe Device, in a patient. Based on the available information a possible causality that the event was caused by the GSK product cannot be ascertained. Consent for further follow-up has not been received.