Received May 15, 2026
Reports are unverified and do not show that a vaccine caused an event. Full disclaimer
| Type | Name | Manufacturer | Dose | Lot | Route / Site |
|---|---|---|---|---|---|
| MMRV | MEASLES + MUMPS + RUBELLA + VARICELLA (PROQUAD) | MERCK & CO. INC. | UNK | Y017204 | — |
did not report any side effects or adverse events regarding the inadvertent administration of the PROQUAD vaccine.; 76 year old female patient was inadvertently administered the PROQUAD; 76 year old female patient was inadvertently administered the PROQUAD vaccine; This spontaneous report was received from a Other health professional and refers to a 76-year-old female patient. The patient's medical history was not reported. The patient's concurrent conditions were not reported. Concomitant therapies were not reported. On 10-Mar-2026, the patient was inadvertently administered the Measles, Mumps, Rubella and Varicella (Oka-Merck) Virus Vaccine Live (PROQUAD) (lot #Y017204, expiration date: 13-Apr-2026), which was reconstituted with sterile diluent (lot # 1973262, expiration date was not reported, but upon internal validation established as 10-Mar-2026) instead of the measles, mumps, and rubella (wistar ra 27-3) virus vaccine (MMR II) vaccine for Prophylaxis (Product administered to patient of inappropriate age, Wrong product administered). The reporter stated that the patient was given a dose of the measles, mumps, and rubella (wistar ra 27-3) virus vaccine (MMR II) vaccine on 10-APR-2026. The reporter did not report any side effects or adverse events regarding the inadvertent administration of the Measles, Mumps, Rubella and Varicella (Oka-Merck) Virus Vaccine Live (PROQUAD) vaccine (No adverse event). The reporter provided limited demographic data and pertinent information. No additional AE/ no PQC reported.
DILUENT MRK