A Phase 3 Study to Assess the Immune Response and Safety of rMenB+OMV NZ in Primed Healthy Participants (10 to 20 Years Old)

Participants were eligible to be included in the study only if all of the following criteria applied: For primed group only:

• Participated who were primed with rMenB + OMV NZ in only either 3+1 or 2+1 schedule during the first 2 years of life as confirmed by electronic or paper vaccination record. OR For naïve group only:
• Electronic or paper vaccination record confirmed participant who has never received any group B meningococcal vaccine and is recruited in the same country as primed participants. For all participants:
• Participants and/or participants’ parent(s)/ legally acceptable representative(s) (LAR[s]), who, in the opinion of the investigator, can and will comply with the requirements of the protocol.
• Written or witnessed/thumb printed informed consent obtained from the participant / parent(s)/LAR(s) of the participant prior to performance of any study-specific procedure.
• Written informed assent obtained from the participant (if applicable) along with informed consent from the participant's parent(s)/LAR(s) prior to performing any study specific procedure. Note: For age 10-16 years, parents or LAR to give consent along with participants, based on country regulations for participants and for >16/18 to 20 years, participants give consent independent of parents/LARs, or as per local country regulations.
• A male or female between, and including, 10 and 20 years of age at the time of the first study intervention administration.
• Female participants of non-childbearing potential may be enrolled in the study. Non-childbearing potential is defined as pre-menarche, hysterectomy, bilateral ovariectomy.
• Female participants of childbearing potential may be enrolled in the study, if the participant: – has practiced adequate contraception for 1 month prior to study intervention administration, and – has a negative pregnancy test on the day of study intervention administration, and – has agreed to continue adequate contraception during the entire study treatment period.

Participants were excluded from the study if any of the following criteria applied: Medical conditions

• Current or previous, confirmed or suspected disease caused by N. meningitidis.
• Known exposure to an individual with laboratory confirmed N. meningitidis infection, within 60 days prior to enrollment.
• History of any reaction or hypersensitivity likely to be exacerbated by any component of the study intervention.
• Medical conditions representing a contraindication to intramuscular vaccination and blood draws.
• Any confirmed or suspected immunosuppressive or immunodeficient condition, based on medical history and physical examination (no laboratory testing required).
• Any other clinical condition that, in the opinion of the investigator, might pose additional risk to the participant due to participation in the study. Prior/Concomitant therapy
• Use of any investigational or non-registered product (drug, vaccine or medical device) other than the study intervention during the period beginning 30 days before the first dose of study intervention (Day -29 to Day 1), or their planned use during the study period.
• Chronic administration of immune-modifying drugs (defined as more than 14 consecutive days in total) and/or planned use of long-acting immune-modifying treatments at any time up to the end of the study. – Within 90 days prior to study intervention administration: for corticosteroids, this will mean prednisone equivalent >=20 milligram (mg)/day for adult participants or >=0.5 mg/kg/day with maximum of 20 mg/day for pediatric participants. Inhaled and topical steroids are allowed. – Within 90 days prior to study intervention administration: long-acting immune-modifying drugs including among others immunotherapy (e.g., TNF-inhibitors), monoclonal antibodies, antitumoral medication.
• Administration of immunoglobulins and/or any blood products or plasma derivatives within 180 days prior to study intervention administration and/or planned use at any time up to the end of the study. For primed group only:
• Participants who received additional dose(s) of group B meningococcal vaccine other than 2+1 or 3+1 schedule prior to study intervention administration. Prior/Concurrent clinical study experience
• Concurrently participating in another clinical study, at any time during the study period, in which the participant has been or will be exposed to an investigational or a non-investigational intervention (drug/vaccine/invasive medical device). Other exclusion criteria
• Pregnant or lactating female participant.
• Any study personnel or their immediate dependents, family, or household member.
• Child in care.