Received Jan 30, 2026
| Type | Name | Manufacturer | Dose | Lot | Route / Site |
|---|---|---|---|---|---|
| MMR | MEASLES + MUMPS + RUBELLA (MMR II) | MERCK & CO. INC. | UNK | Y019931 | — |
| VARCEL | VARICELLA (VARIVAX) | MERCK & CO. INC. | UNK | Z011893 | — |
No symptoms reported as of yet; both vaccines and the facility reconstituted each product individually per prescribing information. However, both products were drawn up into the same syringe inadvertently and administered to the patient.; both vaccines and the facility reconstituted each product individually per prescribing information. However, both products were drawn up into the same syringe inadvertently and administered to the patient.; This spontaneous report was received from a nurse and refers to a male patient of unknown age. The patient's pertinent medical history, previous drug reactions or allergies and concomitant medications were not provided. On 06-Jan-2026, the patient was due for vaccines Measles, Mumps, and Rubella (Wistar RA 27-3) Virus Vaccine, Live (M-M-R II) (lot #Y019931 has been verified to be valid, expiration date reported and established as: 04-Dec-2026) and Varicella Virus Vaccine Live (Oka-Merck) (VARIVAX) (lot #Z011893, has been verified to be valid, expiration date reported and established as: 17-Jul-2027) and the facility reconstituted each product individually with sterile diluent (Hollister-Stier STERILE DILUENT) (lot number not reported) per prescribing information. However, both products were drawn up into the same syringe inadvertently and administered to the patient as prophylaxis (doses, vaccine schemes, route and anatomical site of administration were not provided) (Product administration error and product preparation error). No symptoms reported as of yet (no adverse event).
Sterile diluent