Received Aug 28, 2025
| Type | Name | Manufacturer | Dose | Lot | Route / Site |
|---|---|---|---|---|---|
| MMR | MEASLES + MUMPS + RUBELLA (MMR II) | MERCK & CO. INC. | UNK | Y019108 | — |
| MMRV | MEASLES + MUMPS + RUBELLA + VARICELLA (PROQUAD) | MERCK & CO. INC. | UNK | Z007853 | — |
| UNK | VACCINE NOT SPECIFIED (NO BRAND NAME) | UNKNOWN MANUFACTURER | UNK | — | — |
Nurse confirmed the patient involved did not experience any medical concerns as a result of this report; Unknown vaccine product administered; doses of PROQUAD and MMR II were simultaneously reconstituted into separate syringes without any identifier to differentiate the vaccines from one another; This spontaneous report was received from a nurse concerning a patient of unknown age and gender. The patient's medical history, concurrent conditions, concomitant therapies and drug reactions/allergies were not reported. On 08-Aug-2025, the patient was vaccinated with Measles, Mumps, and Rubella (Wistar RA 27-3) Virus Vaccine, Live (M-M-R II), batch/lot #Y019108 has been verified to be a valid batch lot number for Measles, Mumps, and Rubella (Wistar RA 27-3) Virus Vaccine, Live, expiration date reported and upon internal verification confirmed as 18-Nov-2026, 0.5 mL (Two dose series); or Measles, Mumps, Rubella and Varicella (Oka-Merck) Virus Vaccine Live (PROQUAD), batch/lot #Z007853 has been verified to be a valid batch lot number for Measles, Mumps, Rubella and Varicella (Oka-Merck) Virus Vaccine Live, expiration date reported and upon internal verification confirmed as 19-Oct-2026) 0.5 mL (Two dose series (dosage regimen, anatomical location and route of administration were not provided) administered as prophylaxis. The vaccines were diluted with sterile (expiration date and batch/lot # were not reported). It was reported that on that date, the patient reported to the clinic for a routine vaccination with Measles, Mumps, and Rubella (Wistar RA 27-3) Virus Vaccine, Live (M-M-R II), and doses of Measles, Mumps, Rubella and Varicella (Oka-Merck) Virus Vaccine Live (PROQUAD), and Measles, Mumps, and Rubella (Wistar RA 27-3) Virus Vaccine, Live (M-M-R II), were simultaneously reconstituted into separate syringes without any identifier to differentiate the vaccines from one another (wrong technique in product usage process). Nurse stated that the patient was administered one syringe, but the staff was uncertain which syringe contained the dose of Measles, Mumps, and Rubella (Wistar RA 27-3) Virus Vaccine, Live (M-M-R II), and which dose contained the Measles, Mumps, Rubella and Varicella (Oka-Merck) Virus Vaccine Live (PROQUAD), and was also unsure of which vaccine was administered and which reconstituted vaccine remained unused (unknown vaccine product administered). Nurse confirmed the patient involved did not experience any medical concerns as a result of this report (no adverse event). No additional information was provided. Batch/lot # for sterile diluent is being requested and will be submitted if received.