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Report #2880076

Received Dec 30, 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 21, 2025
Onset
Aug 21, 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; PROQUAD was administered after being involved in a temperature excursion; This Spontaneous report was received from a Medical Assistant and referred to a patient of unknown age and gender. The patient's medical history, concurrent conditions and concomitant medications were not reported. On 21-Aug-2025, the patient was vaccinated with an improperly stored Measles, Mumps, Rubella and Varicella (Oka-Merck) Virus Vaccine Live (PROQUAD) 1 dose, Lot Number: Z002989 and Expiration date: 14-Jul-202 (route and anatomical site of administration were not reported). The vaccine was reconstituted with a sterile diluent (Lot# and expiration date not reported) as prophylaxis. The vaccine had a temperature excursion of 21.9F. 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. There was no previous temperature excursion. No additional Adverse event reported. This is one of several reports from the same source.