HCP called to report a T/E and reports improperly stored PROQUAD was given to 2 patients on 1/17/2025. No symptoms or side effects reported. Related AE case filed in 02738574. No additional AE/no PQC. ? Names of vaccines involved (including lot; No additional AE; This spontaneous report was received from a nurse and refers to a patient of unknown age and gender. The patient’s pertinent medical history, drug reactions or allergies, or concomitant medication were not reported. On an unknown date, the patient was vaccinated with an improperly stored vaccine of measles, mumps, rubella and varicella (oka-merck) virus vaccine live (rHA) (PROQUAD) injection (lot number wheter Y014306 or Y015990 has been verified to be a valid lot number, with expiration date 18-FEB-2026 and 23-MAR-2026, respectively) administered as prophylaxis (dosage, route of administration and anatomical location were not reported) for prophylaxis, which underwent a temperature excursion, at -13.4 °C (-14 °C up to 10 °C ) for 4 hours 30 minutes and 0 seconds. There was no previous temperature excursion. No additional adverse event reported. This is one of two reports received from the same reporter.; Sender’s Comments: US-009507513-2501USA006018: