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Report #2887445

Received Mar 3, 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
MO
Recovered
Unknown
Vaccinated
Feb 24, 2026
Onset
Feb 24, 2026
Days to onset
0
Hospital days

Vaccines (1)

TypeNameManufacturerDoseLotRoute / Site
MMRVMEASLES + MUMPS + RUBELLA + VARICELLA (PROQUAD)MERCK & CO. INC.UNKY013584

Symptoms (2)

Expired product administeredNo adverse event

Symptom narrative

No additional AE; PROQUAD administration after the expiry date; This spontaneous report was received from a nurse and referred to a patient of unknown age and gender. The patient's medical history was not reported. The patient's past medications were not reported. The patient's concomitant medications were not reported. On 24-Feb-2026, the patient was inadvertently administered with Measles, Mumps, Rubella and Varicella (Oka-Merck) Virus Vaccine Live lyophilisate and solvent for solution for injection (PROQUAD), 0.50 mL, total, Batch/Lot Number: Y013584, Expiration date: 03-Feb-2026, for the indication of prophylaxis (route and anatomical site were not reported) after the expiry date (Expired product administered). The vaccine was reconstituted with sterile diluent (MERCK STERILE DILUENT) (lot# not reported, Expiration date: 28-Nov-2026). No temperature excursions (TEs) on the Measles, Mumps, Rubella and Varicella (Oka-Merck) Virus Vaccine Live lyophilisate and solvent for solution for injection (PROQUAD). Utilized Post Expiry memo and provide supported disclaimer. No effects reported/No additional AE (No adverse event).

Other medications

DILUENT MRK