Received Dec 29, 2025
| Type | Name | Manufacturer | Dose | Lot | Route / Site |
|---|---|---|---|---|---|
| TDAP | TDAP (BOOSTRIX) | GLAXOSMITHKLINE BIOLOGICALS | UNK | 37R35 | — |
Was schedule for DTap and accidently gave the Tdap; This non-serious case was reported by a nurse via call center representative and described the occurrence of wrong vaccine administered in a 2-year-old female patient who received DTPa (Reduced antigen) (Boostrix) (batch number 37R35) for prophylaxis. Co-suspect products included DTPa (DTaP vaccine) for prophylaxis. On 19-DEC-2025, the patient received Boostrix. The patient did not receive DTaP vaccine. On 19-DEC-2025, an unknown time after receiving Boostrix, the patient experienced wrong vaccine administered (Verbatim: Was schedule for DTap and accidently gave the Tdap). The outcome of the wrong vaccine administered 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 19-DEC-2025 The nurse called and reported that a 2-year-old patient had been scheduled to receive a vaccine that day. The patient was scheduled for the DTaP vaccine, but the nurse accidentally administered the Tdap vaccine (Boostrix) instead. The intention had been to administer the first DTaP dose rather than Tdap. The vaccine administration facility was the same as primary reporter.