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Report #2887396

Received Mar 2, 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
MA
Recovered
Unknown
Vaccinated
Feb 4, 2026
Onset
Feb 4, 2026
Days to onset
0
Hospital days

Vaccines (2)

TypeNameManufacturerDoseLotRoute / Site
VARCELVARICELLA (VARIVAX)MERCK & CO. INC.UNKZ008428
VARCELVARICELLA (VARIVAX)MERCK & CO. INC.UNKZ013023

Symptoms (2)

No adverse eventProduct storage error

Symptom narrative

no additional AE; the patient was inadvertently administered VARIVAX during a temperature excursion; This spontaneous report was received from other health professional 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 04-Feb-2026, the patient was inadvertently administered with Varicella Virus Vaccine Live (Oka-Merck) (VARIVAX) lyophilisate and solvent for solution for injection (0.50 ml) (dose text: 0.5 ml/ series) (batch/lot number: Z008428) (expiration date: 06-May-2027) or (batch/lot number: Z013023) (expiration date: 12-Aug-2027) together with sterile diluent unknown batch/lot number, during a temperature excursion (exact administered lot of VARIVAX was unknown as there were two involved in the overall excursion); temperature: -11.75C, time frame: 48 minutes (product storage error). No additional AE (no adverse event).

Other medications

sterile diluent