VAERS Explorer
Back to explore

Report #2884756

Received Feb 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
NY
Recovered
Unknown
Vaccinated
Onset
Oct 31, 2025
Days to onset
Hospital days

Vaccines (1)

TypeNameManufacturerDoseLotRoute / Site
VARCELVARICELLA (VARIVAX)MERCK & CO. INC.UNKY015558

Symptoms (2)

No adverse eventProduct storage error

Symptom narrative

No adverse event; Nurse called to report administration of improperly stored vaccines to multiple patients; This Spontaneous report was received from 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 an unknown date, patient was vaccinated with Varicella Virus Vaccine Live (Oka-Merck) (VARIVAX) lyophilisate and solvent for solution for injection (0.5 mL) (Lot Number: Y015558 who had been verified to be a valid lot number, Expiration date: 16-Sep-2026) (anatomical route of administration was not reported) for the treatment of Prophylaxis. The vaccine was reconstituted with sterile diluent (HOLLISTER) (strength, exact dose, route of administration, lot # and expiration date were not reported). On 31-Oct-2025, the nurse report administration of improperly stored vaccines. Temperature store in the refrigerator from 36 F to up 46 F (exact temperature is unknown by reporter) the time frame was unknown. Vaccine was removed from circulation. There was no information about previous temperature excursion (Product storage error). No adverse event.

Other medications

Sterile diluent