Report #2876589

Received Dec 5, 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: Male
Age: 23 yrs
State: NJ
Recovered: Unknown
Vaccinated: Dec 2, 2025
Onset: Dec 2, 2025
Days to onset: 0
Hospital days: —

Vaccines (1)

Type	Name	Manufacturer	Dose	Lot	Route / Site
HEP	HEP B (ENGERIX-B)	GLAXOSMITHKLINE BIOLOGICALS	1	7NX57	LA

Symptoms (1)

Underdose

Symptom narrative

Inappropriate age at vaccine administration; Underdose; 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 a 23-year-old male patient who received HBV (Engerix B pediatric) (batch number 7NX57, expiry date 12-DEC-2026) for prophylaxis. On 02-DEC-2025, the patient received the 1st dose of Engerix B pediatric (left deltoid). On 02-DEC-2025, an unknown time after receiving Engerix B pediatric, the patient experienced adult use of a child product (Verbatim: Inappropriate age at vaccine administration) and underdose (Verbatim: Underdose). The outcome of the adult use of a child product and underdose were not applicable. Additional Information: GSK receipt date 2-DEC-2025 The reporter consented to follow up.