Report #2888691

Received Mar 12, 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: Male
Age: 62 yrs
State: NY
Recovered: Unknown
Vaccinated: Mar 3, 2026
Onset: Mar 3, 2026
Days to onset: 0
Hospital days: —

Vaccines (1)

Type	Name	Manufacturer	Dose	Lot	Route / Site
HEP	HEP B (ENGERIX-B)	GLAXOSMITHKLINE BIOLOGICALS	UNK	LG749	—

Symptoms (1)

Underdose

Symptom narrative

adult patient was inadvertently administered a pediatric dose (0.5ml) dose of Engerix-B; adult patient was inadvertently administered a pediatric dose (0.5ml) dose of Engerix-B; This non-serious case was reported by a nurse via call center representative and described the occurrence of adult use of a child product in a 62-year-old male patient who received HBV (Engerix B pediatric) (batch number LG749, expiry date 13-SEP-2026) for prophylaxis. On 03-MAR-2026, the patient received Engerix B pediatric .5 ml. On 03-MAR-2026, an unknown time after receiving Engerix B pediatric, the patient experienced adult use of a child product (Verbatim: adult patient was inadvertently administered a pediatric dose (0.5ml) dose of Engerix-B) and accidental underdose (Verbatim: adult patient was inadvertently administered a pediatric dose (0.5ml) dose of Engerix-B). The outcome of the adult use of a child product and accidental underdose were not applicable. Additional Information: GSK Receipt date: 06-MAR-2026