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Report #2878949

Received Dec 22, 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
Female
Age
69 yrs
State
IN
Recovered
Unknown
Vaccinated
Dec 2, 2025
Onset
Dec 2, 2025
Days to onset
0
Hospital days
—

Vaccines (1)

TypeNameManufacturerDoseLotRoute / Site
HEPAHEP A (VAQTA)MERCK & CO. INC.UNKZ010429—

Symptoms (2)

No adverse eventUnderdose

Symptom narrative

No adverse effects were reported; Nurse called to report that a pediatric dose of VAQTA was inadvertently administered to an adult patient on 12/2/2025; This spontaneous report was received from a nurse and refers to a 69-year-old female patient. The patient's medical history, concurrent conditions, concomitant therapies, previous drugs reactions and allergies were not reported. On 02-Dec-2025, the patient was inadvertently vaccinated with a pediatric dose of hepatitis a vaccine, inactivated suspension for injection (VAQTA) suspension for injection, administered as prophylaxis (Lot No. Z010429 has been verified to be a valid lot number for [hepatitis a vaccine, inactivated suspension for injection], expiration date reported and upon internal validation established as 09-Oct-2026) (strength, dose number, exact dose quantity volume, route and anatomical location of administration and vaccination scheme frequency were not provided) (product administered to patient of inappropriate age). No adverse effects were reported (No adverse event).