Report #2875936

Received Dec 2, 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: AR
Recovered: Unknown
Vaccinated: Oct 31, 2025
Onset: Oct 31, 2025
Days to onset: 0
Hospital days: —

Vaccines (2)

Type	Name	Manufacturer	Dose	Lot	Route / Site
VARCEL	VARICELLA (VARIVAX)	MERCK & CO. INC.	UNK	Z009470	—
VARCEL	VARICELLA (VARIVAX)	MERCK & CO. INC.	UNK	—	—

Symptoms (2)

No adverse eventProduct storage error

Symptom narrative

No additional AE; Pharmacist stated that a dose of VARIVAX was administered to a patient after being exposed to a temperature excursion on 10/31/2025.; This spontaneous report was received from a pharmacist and refers to a patient of unknown age and gender. The patient's concurrent conditions, medical history, previous drug reactions, drug allergies and concomitant therapies were not provided. On 31-Oct-2025, the patient was vaccinated with an improperly stored dose of Varicella Virus Vaccine Live (Oka-Merck) (VARIVAX) (involved lot # was Z009470, expiration date: 27-May-2027 [verified to be valid]); 0.5 ml/ two dose series, administered for prophylaxis (strength, and route of administration were not provided). Temperature excursion and time frame were not provided. There was no report of adverse effect or product quality complaint involved.