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Report #2864867

Received Oct 10, 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
FL
Recovered
Unknown
Vaccinated
—
Onset
—
Days to onset
—
Hospital days
—

Vaccines (1)

TypeNameManufacturerDoseLotRoute / Site
HEPHEP B (ENGERIX-B)GLAXOSMITHKLINE BIOLOGICALSUNKUNK—

Symptoms (1)

Underdose

Symptom narrative

Wrong vaccine administered; received the pediatric formulation of Engerix B instead of the adult formulation; This non-serious case was reported by a other health professional via call center representative and described the occurrence of adult use of a child product in an unspecified number of patients who received HBV (Engerix B pediatric) for prophylaxis. On an unknown date, the patients received Engerix B pediatric. On an unknown date, an unknown time after receiving Engerix B pediatric, the patients experienced adult use of a child product (Verbatim: Wrong vaccine administered) and underdose (Verbatim: received the pediatric formulation of Engerix B instead of the adult formulation). The outcome of the adult use of a child product and underdose were not applicable. This report is made by GSK without prejudice and does not imply any admission or liability for the incident or its consequences. Additional Information: GSK Receipt Date: 23-SEP-2025 The reporter reported that an unknown number of patients received the pediatric formulation of Engerix B instead of the adult formulation. The patient does not have any demographic information at this time and will call back with additional information. The batch number was not provided and a request for this information has been made.