dose of expired Engerix-B was administered to the pateint; This non-serious case was reported by a other health professional via call center representative and described the occurrence of expired vaccine used in a patient who received HBV (Engerix B) (expiry date 01-AUG-2024) for prophylaxis. On 26-DEC-2024, the patient received Engerix B. On 26-DEC-2024, an unknown time after receiving Engerix B, the patient experienced expired vaccine used (Verbatim: dose of expired Engerix-B was administered to the pateint). The outcome of the expired vaccine used was unknown. Additional Information: GSK Receipt Date: 30-DEC-2024 The manager of an urgent care reported that a dose of Engerix-B was expired, and a medical assistant administered it to a patient which led to, expired vaccine used.