Age: 17.0
Sex: M
Vaccine: MEN
Symptoms: Extra dose administered, No adverse event
Clinical narrative: a patient accidentally received a dose of MENQUADFI on 18Oct2023, and then he received another dose of MENQUADFI on 25Oct2023 with no reported adverse event; Initial information received on 26-Oct-2023 regarding an unsolicited valid  non-serious case received from a nurse.  This case involves a 17 years old male patient who accidentally received a dose of Meningococcal A-C-Y-W135 (T Conj) Vaccine [Menquadfi] on 18oct2023, and then he received another dose of menquadfi on 25oct2023 with no reported adverse event.  The patient's past medical history, medical treatment(s), vaccination(s) and family history were not provided.   On 18-Oct-2023, the patient received 0.5 ml (Dose 1) of suspect Meningococcal A-C-Y-W135 (T Conj) Vaccine Solution for injection (lot number: U7673AA) (Expiry date: 29-Jun-2025) (Strength: standard) (Frequency: once) via intramuscular route in unknown administration site for prophylactic vaccination (Immunisation). On 25-Oct-2023 he also received a Dose 2 of the same vaccine of same batch and expiry date via intramuscular route in the left arm for prophylactic vaccination (Immunisation).  On 25-Oct-2023, the patient accidentally received a dose of Meningococcal A-C-Y-W135 (T Conj) Vaccine [Menquadfi] on 18oct2023, and then he received another dose of menquadfi on 25oct2023 with no reported adverse event (extra dose administered) (latency: 7 days).  It was reported, Nurse reports that there was a medication error where a patient accidentally received a dose of MENQUADFI on 18Oct2023, and then he received another dose of MENQUADFI on 25Oct2023. She asks for information that they can provide to the patient's parents. This situation is reported as a medication error due to patient received 2-MENQUADFI doses 1-week apart. The nurse explains that they did a vaccine clinic at school; there was a language barrier between the staff and the patient's parents. The patient's parents signed the patient up for the vaccine clinic on 13Oct2023. The staff pulled the patient's vaccination records on 13Oct2023, and at that time the patient did not have a second dose of meningococcal vaccine. The nurse explains that in the time between when they signed up for the vaccine clinic on 13Oct2023 and the vaccine clinic event on 25Oct2023, the patient had gone to his PCP or the health department and received a dose of MENQUADFI on 18Oct2023. He then received another dose of MENQUADFI at the vaccine clinic on 25Oct2023. They only caught the error when they were entering the MENQUADFI dose into the vaccine record system.   This suspected adverse reaction report is submitted and classified as a medication error solely and exclusively to ensure the marketing authorization holder's compliance with the requirements set out in the Directive 2001/83/EC and Module VI of the Good Pharmacovigilance Practices. The classification as a medical error is in no way intended, nor should it be interpreted or construed as an allegation or claim made by the marketing authorization holder that any third party has contributed to or is to be held liable for the occurrence of this medication error.