Report #2876121

Received Dec 3, 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: Age unknown
State: TX
Recovered: Unknown
Vaccinated: Apr 16, 2025
Onset: Apr 16, 2025
Days to onset: 0
Hospital days: —

Vaccines (1)

Type	Name	Manufacturer	Dose	Lot	Route / Site
HEPAB	HEP A + HEP B (TWINRIX)	GLAXOSMITHKLINE BIOLOGICALS	UNK	324BY	LA

Symptoms (1)

Product administered to patient of inappropriate age

Symptom narrative

Twinrix administered to 15 year old; This non-serious case was reported by a other health professional via sales rep and described the occurrence of inappropriate age at vaccine administration in a 15-year-old female patient who received HAB (Twinrix) (batch number 324BY, expiry date 28-SEP-2026) for prophylaxis. On 16-APR-2025, the patient received Twinrix (left deltoid) .5 ml. On 16-APR-2025, an unknown time after receiving Twinrix, the patient experienced inappropriate age at vaccine administration (Verbatim: Twinrix administered to 15 year old). The outcome of the inappropriate age at vaccine administration was 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 24-OCT-2025 The child was administered with Twinrix adult as the first dose of Hepatitis A and the second dose of Hepatitis B for catch-up. This was done based on the doctor's recommendation due to the monovalent vaccine being out of stock. The batch number was not provided and a request for this information has been made.