Received Nov 13, 2025
| Type | Name | Manufacturer | Dose | Lot | Route / Site |
|---|---|---|---|---|---|
| VARCEL | VARICELLA (VARIVAX) | MERCK & CO. INC. | UNK | Y010374 | — |
No additional adverse event; HCP called to report a TE occurring on 8/18/2025 for PROQUAD and VARIVAX.; This spontaneous report was received from a physician concerning a 1-year-old patient of an unknown gender. The patient's concurrent conditions, medical history, or concomitant therapies were not provided. On 18-AUG-2025, a temperature excursion occurred and on an unknown date in 2025, the patient was vaccinated with an improper stored dose of Varicella Virus Vaccine Live (Oka-Merck) (VARIVAX) injection, lot # Y010374 [which has been verified to be a valid lot number for Varicella Virus Vaccine Live (Oka-Merck)], expiration date not reported but upon internal validation establish as 05-JUN-2026, 0.5 mL administered as prophylaxis (dose number, route or site of administration were not provided) (improper stored of product in use). The vaccine was reconstituted with sterile diluent (Hollister-Stier STERILE DILUENT) (lot number and expiration date were not provided) (Product storage error). No adverse events were reported. This is one of several reports received from the same reporter.
MERCK STERILE DILUENT