Received Dec 8, 2025
| Type | Name | Manufacturer | Dose | Lot | Route / Site |
|---|---|---|---|---|---|
| MMRV | MEASLES + MUMPS + RUBELLA + VARICELLA (PROQUAD) | MERCK & CO. INC. | UNK | Z012112 | — |
No Additional AE; patient inadvertently received PROQUAD instead of MMRII.; This spontaneous report was received from a Consumer or other non health professional and refers to a specified patient of unknown age and gender. The patient's medical history, concurrent conditions and concomitant therapies were not reported. On 02-Dec-2025, the patient was vaccinated with Measles, Mumps, Rubella and Varicella (Oka-Merck) Virus Vaccine Live (PROQUAD) (lot #Z012112 with valid expiration date reported as 19-Jan-2027) 0.5 mL (route of administration and vaccination site were not reported) administered for prophylaxis. The vaccine was reconstituted with sterile diluent, solution for injection (lot # and expiration date were not reported). The patient inadvertently received Measles, Mumps, Rubella and Varicella (Oka-Merck) Virus Vaccine Live (PROQUAD) instead of Measles, Mumps, and Rubella (Wistar RA 27-3) Virus Vaccine, Live lyophilisate and solvent for solution for injection (M-M-R II) (wrong product administered). Measles, Mumps, Rubella and Varicella (Oka-Merck) Virus Vaccine Live (PROQUAD) was stored in the refrigerator in Measles, Mumps, and Rubella (Wistar RA 27-3) Virus Vaccine, Live lyophilisate and solvent for solution for injection (M-M-R II) carton box (unknown time frame and temperature). No symptoms were reported. No Additional adverse event (AE) or product quality complaint (PQC) was reported (no adverse event).
Sterile diluent