* Only the study staff who prepare and administer the study intervention and are not involved with the safety evaluation will know which study intervention is administered whoMasked: PARTICIPANT whoMasked: INVESTIGATOR whoMasked: OUTCOMES_ASSESSOR count: 840 type: ESTIMATED name: MenACYW conjugate vaccine name: MenACYW conjugate vaccine measure: Geometric mean titers (GMTs) of Antibodies against meningococcal serogroups A, C, Y and W measure: hSBA antibody titers ≥ 1:8 against meningococcal serogroups A, C, Y, and W measure: hSBA antibody titers against meningococcal serogroups A, C, W, and Y measure: hSBA antibody titers ≥ several pre-defined thresholds against meningococcal serogroups A, C, Y, and W measure: Percentage of Participants who achieved ≥4-fold rise in antibody titers over baseline measured by hSBA measure: hSBA meningococcal serogroups A, C, Y, and W vaccine seroresponse measure: Rabbit complement (rSBA) antibody titers against meningococcal serogroups A, C, W, and Y measure: rSBA antibody titers ≥ several pre-defined thresholds against meningococcal serogroups A, C, Y, and W measure: Percentage of Participants who achieved ≥4-fold rise in antibody titers over baseline measured by rSBA measure: rSBA meningococcal serogroups A, C, Y, and W vaccine seroresponse measure: Number of participants with immediate adverse events (AEs) measure: Number of participants with solicited injection site reactions or systemic reactions measure: Number of participants with unsolicited AEs measure: Number of participants with serious adverse events (SAEs) sex: ALL minimumAge: 6 Months maximumAge: 14 Months stdAges: CHILD facility: Investigational Site Number: 2030001 status: RECRUITING city: Ceske Budejovice country: Czechia lat: 48.97447 lon: 14.47434 facility: Investigational Site Number: 2030005 status: RECRUITING city: Prague country: Czechia lat: 50.08804 lon: 14.42076 facility: Investigational Site Number: 2080004 status: RECRUITING city: Aarhus country: Denmark lat: 56.15674 lon: 10.21076 facility: Investigational Site Number: 2460006 status: RECRUITING city: Jaarvenpa country: Finland facility: Investigational Site Number: 2460007 status: RECRUITING city: Oulu country: Finland lat: 65.01236 lon: 25.46816 facility: Investigational Site Number: 2460004 status: RECRUITING city: Tampere country: Finland lat: 61.49911 lon: 23.78712 facility: Investigational Site Number: 2460012 status: RECRUITING city: Turku country: Finland lat: 60.45148 lon: 22.26869 facility: Investigational Site Number: 2760007 status: RECRUITING city: Erfurt country: Germany lat: 50.9787 lon: 11.03283 facility: Investigational Site Number: 2760001 status: RECRUITING city: Moenchengladbach country: Germany lat: 51.18539 lon: 6.44172 facility: Investigational Site Number: 2760005 status: RECRUITING city: Schoenau Am Koenigssee country: Germany facility: Investigational Site Number: 6160017 status: RECRUITING city: Bydgoszcz country: Poland lat: 53.1235 lon: 18.00762 facility: Investigational Site Number: 6160015 status: RECRUITING city: Krakow country: Poland lat: 50.06143 lon: 19.93658 facility: Investigational Site Number: 6160021 status: RECRUITING city: Krakow country: Poland lat: 50.06143 lon: 19.93658 facility: Investigational Site Number: 6160016 status: RECRUITING city: Leczna country: Poland lat: 51.30121 lon: 22.88135 facility: Investigational Site Number: 6160012 status: RECRUITING city: Lubon country: Poland lat: 52.34705 lon: 16.89267 facility: Investigational Site Number: 6160007 status: RECRUITING city: Torun country: Poland lat: 53.01375 lon: 18.59814 facility: Investigational Site Number: 6160014 status: RECRUITING city: Trzebnica country: Poland lat: 51.31076 lon: 17.06331 facility: Investigational Site Number: 6160010 status: RECRUITING city: Wroclav country: Poland facility: Investigational Site Number: 6420005 status: RECRUITING city: Calarasi country: Romania lat: 44.2051 lon: 27.31356 hasResults: False