Received Mar 4, 2026
| Type | Name | Manufacturer | Dose | Lot | Route / Site |
|---|---|---|---|---|---|
| MMR | MEASLES + MUMPS + RUBELLA (PRIORIX) | GLAXOSMITHKLINE BIOLOGICALS | UNK | — | — |
Use of a Non-approved Diluent to Reconstitute Priorix; Use of a Non-approved Diluent to Reconstitute Priorix; This non-serious case was reported by a other health professional via sales rep and described the occurrence of wrong solution used in drug reconstitution in a 14-month-old patient who received MMR (Priorix) for prophylaxis. In FEB-2026, the patient received Priorix. In FEB-2026, an unknown time after receiving Priorix, the patient experienced wrong solution used in drug reconstitution (Verbatim: Use of a Non-approved Diluent to Reconstitute Priorix) and inappropriate dose of vaccine administered (Verbatim: Use of a Non-approved Diluent to Reconstitute Priorix). The outcome of the wrong solution used in drug reconstitution and inappropriate dose of vaccine administered 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: 24-FEB-2026 There was an error made when administering Priorix last week to a patient. The staff member used the sterile water diluent that came with Proquad and Varivax vaccines instead of using the diluent that came in the Priorix box. The reporter would like to know if this patient needs to be re-vaccinate and the vaccine not valid because the wrong type of sterile water diluent was used. The batch number was not provided and a request for this information has been made.