VAERS Explorer
Back to explore

Report #2881265

Received Jan 9, 2026

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
Jan 5, 2026
Onset
Jan 5, 2026
Days to onset
0
Hospital days
—

Vaccines (2)

TypeNameManufacturerDoseLotRoute / Site
MMRVMEASLES + MUMPS + RUBELLA + VARICELLA (PROQUAD)MERCK & CO. INC.1Z014047OT
MMRVMEASLES + MUMPS + RUBELLA + VARICELLA (PROQUAD)MERCK & CO. INC.UNK——

Symptoms (1)

Product storage error

Symptom narrative

No additional AE/PQC; temperature excursion for PROQUAD/ one dose was administered to a patientct; This spontaneous report was received from medical assistant and referred to a patient of unknown age and gender. The patient's concurrent conditions, medical history and concomitant medications were not reported. On 05-Jan-2026, the patient was vaccinated with the first dose of Measles, Mumps, Rubella and Varicella (Oka-Merck) Virus Vaccine Live lyophilisate and solvent for solution for injection (PROQUAD), 0.5 ml, subcutaneously, lot number: Z014047, expiration date: 03-Mar-2027 (anatomical location was not provided) for prophylaxis. The vaccine was reconstituted with sterile diluent (dose, lot # and expiry date were not provided). On an unknown date, the dose of Measles, Mumps, Rubella and Varicella (Oka-Merck) Virus Vaccine Live lyophilisate and solvent for solution for injection (PROQUAD) experienced temperature excursion from 14 to 46 Fahrenheit degrees for 1 hour and 10 minutes and 6 to 14 Fahrenheit degrees for 1 hour. There was no previous temperature excursion. On 05-Jan-2026, the dose was administered to patient (Product storage error).