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Report #2893040

Received Apr 16, 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
Female
Age
Age unknown
State
MA
Recovered
Unknown
Vaccinated
Apr 15, 2026
Onset
Apr 15, 2026
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 additional AE reported.; Nurse reported patient was accidently administered a pediatric dose of VAQTA instead of an adult dose of VAQTA; This spontaneous report was received from a nurse and refers to a 45-year-old female patient. The patient's pertinent medical history, drug allergies or reactions, and concomitant medications were unknown by the reporter. On 15-Apr-2026, the patient was accidently vaccinated with a pediatric dose of Hepatitis A Vaccine, Inactivated (VAQTA) 0.5 ml (route of administration and anatomical location not reported, lot number Z010429, which was verified to be valid; expiration date established on 09-Oct-2026) for prophylaxis. (Product administered to patient of inappropriate age). There was no adverse event reported.