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Report #2881171

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
AR
Recovered
Unknown
Vaccinated
Dec 4, 2025
Onset
Dec 4, 2025
Days to onset
0
Hospital days
—

Vaccines (1)

TypeNameManufacturerDoseLotRoute / Site
MMRVMEASLES + MUMPS + RUBELLA + VARICELLA (PROQUAD)MERCK & CO. INC.UNKZ011862—

Symptoms (2)

No adverse eventProduct administered to patient of inappropriate age

Symptom narrative

No adverse event; Nurse reported that a 45-year-old patient received PROQUAD due to a human error. No additional AE/No PQC reported.; This spontaneous report was received from other health professional and refers to a 45-year-old patient of unknown gender (Inappropriate age at vaccine administration). The patient's pertinent medical history, concurrent conditions, concomitant medications, and previous drug reactions or allergies were not reported. On 04-Dec-2025, the patient received the first dose of measles, mumps, rubella, and varicella (Oka-Merck) virus vaccine, live (PROQUAD), reconstituted with Hollister-Stier Sterile Diluent, for prophylaxis. The lot #Z011862 was verified as valid, with an expiration date of 13-Jan-2027 (dose, route of administration, and anatomical site of injection were not reported). The vaccination was reported as a human error. No additional adverse event was reported (no adverse event).

Other medications

Sterile diluent