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Report #2879327

Received Dec 23, 2025

A note on interpretation. VAERS reports are unverified and may be incomplete or coincidental. A report does not establish that a vaccine caused an event, and counts should not be used to calculate incidence or infer causation. Full disclaimer

Overview

Sex
Unknown
Age
Age unknown
State
CA
Recovered
Unknown
Vaccinated
Aug 25, 2025
Onset
Aug 25, 2025
Days to onset
0
Hospital days
—

Vaccines (2)

TypeNameManufacturerDoseLotRoute / Site
MMRVMEASLES + MUMPS + RUBELLA + VARICELLA (PROQUAD)MERCK & CO. INC.UNKZ002989—
MMRVMEASLES + MUMPS + RUBELLA + VARICELLA (PROQUAD)MERCK & CO. INC.UNK——

Symptoms (2)

No adverse eventProduct storage error

Symptom narrative

No additional AE; Medical assistant called and reported PROQUAD was administered after being involved in a temperature excursion; This spontaneous report was received from an other health professional and refers to a patient of unknown age and gender. The patient's medical history was not reported. The patient's concurrent conditions were not reported. Concomitant therapies were not reported. On 25-AUG-2025, the patient was vaccinated with improperly stored dose of Measles, Mumps, Rubella and Varicella (Oka-Merck) Virus Vaccine Live (PROQUAD), Injection (lot #Z002989 was valid, expiration date: 14-JUL-2026, 1 dosage form, 1 dose) with sterile diluent (Hollister-Stier STERILE DILUENT), Solution for injection (expiration date, and lot # were not reported) for prophylaxis (Product storage error). No additional adverse event (AE)/no product quality complaint (PQC) reported (No adverse event). Temperature excursion of 21.9 F and time frame 14°F to 46°F for 12 Hours 30 Minutes 0 Seconds; 6°F to 14°F for 37 Hours 30 Minutes 0 Seconds were reported. This is one of 12 reports from the same reporter.