No additional AE; The HCP reports that VARIVAX was inadvertently administered after suffering from a Temperature excursion; This spontaneous report was received from a nurse and refers to a patient of unknown age and gender. The patient’s medical history, concurrent conditions were not provided. Concomitant medications included sterile diluent (MERCK STERILE DILUENT). On 22-NOV-2024, the patient was vaccinated with varicella virus vaccine live (oka/merck) (VARIVAX) injection, 0.5 milliliter/series, lot #Y006522, expiration date: 25-MAR-2026, administered for prophylaxis (strength and route of administration was not provided) inadvertently after suffering from a temperature excursion (Product storage error). Varicella virus vaccine live (oka/merck) (VARIVAX) reached -11.6 degree Celsius but previous excursions for 3 hours 5 minutes. But previous excursions could not be confirmed. No symptomatic adverse events were reported. Lot# and expiration date of the sterile diluent (MERCK STERILE DILUENT) used to reconstitute the varicella virus vaccine live (oka/merck) (VARIVAX) were unknown. No additional AE (No adverse event).