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Report #2855428

Received Aug 25, 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
Female
Age
4 yrs
State
MO
Recovered
Unknown
Vaccinated
Apr 1, 2025
Onset
Apr 1, 2025
Days to onset
0
Hospital days
—

Vaccines (2)

TypeNameManufacturerDoseLotRoute / Site
MMRVMEASLES + MUMPS + RUBELLA + VARICELLA (PROQUAD)MERCK & CO. INC.2Y019171OT / LL
MMRVMEASLES + MUMPS + RUBELLA + VARICELLA (PROQUAD)MERCK & CO. INC.UNK—OT

Symptoms (2)

No adverse eventProduct storage error

Symptom narrative

No adverse effects were reported; vaccine involved in temperature excursion; This spontaneous report was received from a nurse and refers to a 4-year-old female patient. The patient had no illness at the time of vaccination and no pre-existing physician-diagnosed medical conditions. Her concomitant therapies were not reported. Historical vaccines included 1st dose of measles, mumps, rubella and varicella (oka-merck) virus vaccine live (PROQUAD). On 01-APR-2025, the patient was vaccinated with 2nd dose of measles, mumps, rubella and varicella (oka-merck) virus vaccine live (PROQUAD) injection at a dose of 0.5 mL, administered intramuscularly in left thigh, lot #Y019171, expiration date: 18-MAY-2026, administered for prophylaxis. The vaccine was reconstituted with sterile diluent (lot# and expiry date not reported). The vaccine was involved in freezer temperature excursion and not supported for use (Product storage error). The vaccine was discarded after use. No adverse effects were reported. This is one of several reports received from the same reporter.