Report #2865209

Received Oct 13, 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: Unknown
Age: Age unknown
State: CA
Recovered: Unknown
Vaccinated: Sep 11, 2025
Onset: Sep 11, 2025
Days to onset: 0
Hospital days: —

Vaccines (2)

Type	Name	Manufacturer	Dose	Lot	Route / Site
VARCEL	VARICELLA (VARIVAX)	MERCK & CO. INC.	UNK	Z008082	OT
VARCEL	VARICELLA (VARIVAX)	MERCK & CO. INC.	UNK	—	OT

Symptoms (1)

Product storage error

Symptom narrative

vaccine was administered after temperature excursion; This spontaneous report was received from an Other health professional (Medical Assistant) and refers to a patient of unknown age and gender. The patient's medical history, concurrent conditions, and concomitant therapies were not reported. On 11-Sep-2025, the patient was vaccinated with an improperly stored dose of Varicella Virus Vaccine Live (Oka-Merck) (VARIVAX), Injection (valid lot #Z008082, expiration date: 28-Apr-2027) 0.5 mL administered by Subcutaneous route for prophylaxis (dose number and anatomical location were not provided). Suspect vaccine was reconstituted with sterile diluent, solution for injection (expiration date, and lot # were not reported). Administered dose of suspect vaccine was exposed to the temperature excursion on an unknown date: 32 Fahrenheit (F) degrees for 4 hours 30 minutes 0 seconds (product storage error, onset date: 11-Sep-2025). Previous temperature excursion was reported as no. This is one of several reports received from the same reporter.