Received Feb 18, 2026
| Type | Name | Manufacturer | Dose | Lot | Route / Site |
|---|---|---|---|---|---|
| TDAP | TDAP (BOOSTRIX) | GLAXOSMITHKLINE BIOLOGICALS | 1 | 25A2F | — |
the accidental administration of Boostrix after it expired.; This non-serious case was reported by a other health professional via call center representative and described the occurrence of expired vaccine used in a 83-year-old male patient who received DTPa (Reduced antigen) (Boostrix) (batch number 25A2F, expiry date 19-JAN-2026) for prophylaxis. On 16-FEB-2026, the patient received the 1st dose of Boostrix. On 16-FEB-2026, an unknown time after receiving Boostrix, the patient experienced expired vaccine used (Verbatim: the accidental administration of Boostrix after it expired.). The outcome of the expired vaccine used was 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: 16-FEB-2026 Reporter called to request data about the accidental administration of Boostrix after it expired.