Received Aug 8, 2025
| Type | Name | Manufacturer | Dose | Lot | Route / Site |
|---|---|---|---|---|---|
| DTAP | DTAP (INFANRIX) | GLAXOSMITHKLINE BIOLOGICALS | UNK | 5KR3R | — |
Maladministration of DTAP (Infanrix) instead of TDAP (Boostrix); Maladministration of DTAP (Infanrix); This non-serious case was reported by a nurse via call center representative and described the occurrence of wrong vaccine administered in a 11-year-old male patient who received DTPa (Infanrix) (batch number 5KR3R, expiry date 06-FEB-2027) for prophylaxis. Co-suspect products included DTPa (Reduced antigen) (Boostrix) for prophylaxis. On 16-JUL-2025, the patient received Infanrix. The patient did not receive Boostrix. On 16-JUL-2025, an unknown time after receiving Infanrix, the patient experienced wrong vaccine administered (Verbatim: Maladministration of DTAP (Infanrix) instead of TDAP (Boostrix)) and inappropriate age at vaccine administration (Verbatim: Maladministration of DTAP (Infanrix)). The outcome of the wrong vaccine administered and inappropriate age at vaccine administration 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: 18-JUL-2025 Registered nurse called to report that the maladministration of the wrong vaccine diphtheria, tetanus, and pertussis (Infanrix) instead of tetanus, diphtheria, and pertussis vaccine (Boostrix) to twin brothers, which led to wrong vaccine administered. The patient received Infanrix vaccine at an inappropriate age, which led to inappropriate age at vaccine administration. The reporter wants guidance on this situation. Vaccination date, vaccine detail and patient demographics were obtained in this call. No further information was obtained in this call. The vaccine administration facility was the same as primary reporter. This is 1 of 2 linked cases reported by the same reporter.; Sender's Comments: US-GSK-US2025092571:case for twin brother