Received Oct 7, 2025
| Type | Name | Manufacturer | Dose | Lot | Route / Site |
|---|---|---|---|---|---|
| MMRV | MEASLES + MUMPS + RUBELLA + VARICELLA (PROQUAD) | MERCK & CO. INC. | UNK | Z011680 | — |
| VARCEL | VARICELLA (VARIVAX) | MERCK & CO. INC. | UNK | Z003766 | — |
No adverse effects were reported; PROQUAD was inadvertently administered instead; inadvertent concomitant administration of PROQUAD and VARIVAX; This spontaneous report was received from a medical assistant and refers to a(n) 1-year-old patient of unknown gender. The patient's medical history was not reported. The patient's concurrent conditions were not reported. Concomitant therapies were not reported. On 24-Sep-2025, the patient was vaccinated inadvertently with Measles, Mumps, Rubella and Varicella (Oka-Merck) Virus Vaccine Live (PROQUAD) injection, 0.5 mL, lot #Z011680, expiration date: 10-Jan-2027 and Varicella Virus Vaccine Live (Oka-Merck) (VARIVAX) injection, 0.5 mL, lot #Z003766, expiration date: 30-Jan-2027 concomitantly for prophylaxis. The both vaccines were reconstituted with sterile diluent (Hollister-Stier STERILE DILUENT), (lot # and expiration date were not reported) (Accidental overdose). Patient was supposed to receive MMR II, and due to a medication error, Measles, Mumps, Rubella and Varicella (Oka-Merck) Virus Vaccine Live (PROQUAD) was inadvertently administered instead (Wrong product administered). No adverse effects were reported (No adverse event). No additional AE/No PQC.
sterile diluent