Sex: M
Vaccine: MENB, MNQ
Symptoms: Loss of consciousness, Syncope, Wrong product administered
Clinical narrative: Vasovagal Syncope episode: as passing out for a second and the head going down; about half of the medication was injected and could not complete the dose of Menactra; given a partial dose of Menactra in error instead of the prescribed Bexsero vaccine; Initial information received on 23-Oct-2019 regarding an unsolicited valid serious case received from a nurse.  This case involves a 17 years old male patient who experienced vasovagal syncope episode as passing out for a second and the head going down (syncope) and reported that given a partial dose of Menactra in error instead of the prescribed Bexsero vaccine (MENINGOCOCCAL VACCINE B RFHBP/NADA/NHBA OMV) (underdose) and (wrong product administered), while he received vaccine MENINGOCOCCAL A-C-Y-W135 (D CONJ) VACCINE [MENACTRA].  The patient's past vaccination(s) included two doses of Menactra in 2013 and in 2018. The patient's past medical history, medical treatment(s) and family history were not provided.  Concomitant medications included INFLUENZA VACCINE INACT SPLIT VIRION 3V (FLUARIX).  On 23-Oct-2019, the patient received a dose of suspect MENINGOCOCCAL A-C-Y-W135 (D CONJ) VACCINE lot number not reported and expiry date: 29-Jan-2021 via intramuscular route in the right deltoid.  On an unknown date, following the vaccination the patient experienced vasovagal syncope episode as passing out for a second and the head going down (syncope). This event was assessed as medically significant.  It was also a case of actual medication error due to vaccine underdose and wrong vaccine administered.  Relevant laboratory test results included:  Blood pressure measurement - On an unknown date: 119/58 [unknown]; on an unknown date: 70/54 [unknown]  Heart rate - On an unknown date: 58 [unknown]; on an unknown date: 51  (Other relevant tests included no lab data.)  Final diagnosis was syncope vasovagal.  As corrective treatment gave water, food (apple sauce), watched and check blood pressure and heart rate.  The outcome of the event was unknown at the time of reporting.  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 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.  Information on the batch number was requested.; Sender's Comments: This case involves a 17 years old male patient who experienced vasovagal syncope during vaccination. More details regarding patient's medical history, previous vaccination history, history of similar episode, etiological workup and investigation reports to identify alternative etiology are needed for complete assessment of the case. Based on the available information, the role of the vaccine cannot be assessed.