Received Nov 4, 2025
| Type | Name | Manufacturer | Dose | Lot | Route / Site |
|---|---|---|---|---|---|
| VARCEL | VARICELLA (VARIVAX) | MERCK & CO. INC. | UNK | Z009470 | — |
No adverse event; Physician stated that a 6 month old patient was administered a dose of VARIVAX due to a medication error by medical staff; This spontaneous report was received from a Physician and refers to a 6-months-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 23-Oct-2025, the patient inadvertently administered a dose of Varicella Virus Vaccine Live (Oka-Merck) (VARIVAX), lot #Z009470, expiration date: 27-May-2027, 0.5 mL ("0.5 mL / Two Dose series", route, anatomical location, strength, dose number, and vaccination scheme were not reported), as Prophylaxis. On that date, during a routine visit alongside with the patient's older sibling who was 4 years old, and the Physician stated that the Varicella Virus Vaccine Live (Oka-Merck) (VARIVAX) dose was prepared to be administered to the 4-years-old patient's sibling, but the medical staff member inadvertently administered the dose to the 6-months-old patient in error. No adverse event was reported. Lot # is being requested and will be submitted if received.
Sterile diluent