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Report #2890467

Received Mar 23, 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
Mar 18, 2026
Onset
Mar 18, 2026
Days to onset
0
Hospital days

Vaccines (1)

TypeNameManufacturerDoseLotRoute / Site
MMRVMEASLES + MUMPS + RUBELLA + VARICELLA (PROQUAD)MERCK & CO. INC.UNKZ008223

Symptoms (1)

Product storage error

Symptom narrative

No additional AE; one dose of PROQUAD was administered to one patient during a temperature excursion; This spontaneous report was received from an office manager and refers to a patient of unknown age and gender. The patient's medical history, concurrent conditions, and concomitant therapies were not reported. On 18-Mar-2026, the patient was vaccinated with an improperly stored dose of Measles, Mumps, Rubella and Varicella (Oka-Merck) Virus Vaccine Live (PROQUAD), (lot #Z008223, expiration date: 27-Oct-2026) which was reconstituted with sterile diluent (Hollister-Stier STERILE DILUENT), Solution for injection (indication, expiration date, and lot # were not reported). The vaccine underwent a temperature excursion of 14°F to 46°F (23.6°F) for 6 hours. No additional adverse event was reported. Lot # is being requested and will be submitted if received.

Other medications

MERCK STERILE DILUENT