Received Oct 30, 2025
| Type | Name | Manufacturer | Dose | Lot | Route / Site |
|---|---|---|---|---|---|
| TDAP | TDAP (BOOSTRIX) | GLAXOSMITHKLINE BIOLOGICALS | 2 | 94KG2 | — |
| TDAP | TDAP (BOOSTRIX) | GLAXOSMITHKLINE BIOLOGICALS | 1 | 4YA34 | — |
Drug Exposure During Pregnancy; Extra dose administered.; she was supposed to get Flu vaccine and instead was accidentally given TDAP; This non-serious prospective pregnancy case was reported by a other health professional via call center representative and described the occurrence of extra dose administered in a 25-year-old female patient who received DTPa (Reduced antigen) (Boostrix) (batch number 94KG2, expiry date 28-NOV-2027) for prophylaxis. Co-suspect products included DTPa (Reduced antigen) (Boostrix) (batch number 4YA34, expiry date 05-NOV-2027) for prophylaxis and Flu unspecified (Flu vaccine) for prophylaxis. On 06-OCT-2025, the patient received the 2nd dose of Boostrix. On 04-SEP-2025, the patient received the 1st dose of Boostrix. The patient did not receive Flu vaccine. On 06-OCT-2025, an unknown time after receiving Boostrix, the patient experienced extra dose administered (Verbatim: Extra dose administered.) and wrong vaccine administered (Verbatim: she was supposed to get Flu vaccine and instead was accidentally given TDAP). On an unknown date, the patient experienced vaccine exposure during pregnancy (Verbatim: Drug Exposure During Pregnancy). The outcome of the extra dose administered, wrong vaccine administered and vaccine exposure during pregnancy were not applicable. Pregnancy exposure: Pregnancy Exposure (Boostrix): To mother in third trimester Pregnancy Exposure (Boostrix): To mother in third trimester Pregnancy Exposure (Flu vaccine): To mother in third 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:06-OCT-2025 The reporter had a question one was related to the TDAP vaccine and the other was related to, actually, only one question was related to TDAP. A pregnant patient who on, September Fourth, received Boostrix, she got TDAP administered by our staff. At the time of reporting, she returned, she was supposed to get Flu vaccine and instead was accidentally given TDAP. So, she had TDAP twice in a month. So, his/her question was: She was pregnant, she was 32 weeks and 6 days pregnant. The reporter asked if they had any information, any clinical information, on patients who received Two TDAP vaccines in pregnancy.