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Immunogenicity, Safety and 1 Year Persistence of Antibodies After Either One or Two Doses of Meningococcal ACWY Conjugate Vaccine in Healthy Children 2 Through 10 Years of Age.

A Phase 3b, Randomized, Observer-Blind, Placebo-Controlled Multi-Center Study Comparing Immunogenicity, Safety and 1 Year Persistence of Antibodies After Either One or Two Doses of Novartis Meningococcal ACWY Conjugate Vaccine, Administered to Healthy Children 2 to 10 Years of Age.

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01682876
Enrollment
715
Registered
2012-09-11
Start date
2012-10-07
Completion date
2014-05-30
Last updated
2019-06-14

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Meningococcal Disease, Infections, Meningococcal

Keywords

Prevention of meningococcal disease, children, vaccine

Brief summary

This study was designed to conduct a comparative trial to further evaluate the safety, immunogenicity and antibody persistence of two doses of Novartis MenACWY conjugate vaccine, given 2 months apart, versus one dose of Novartis MenACWY conjugate vaccine in children 2 through 10 years of age.

Interventions

BIOLOGICALMenACWY-CRM

The investigational meningococcal (groups A, C, Y, and W-135 vaccine) oligosaccharide diphtheria CRM197 conjugate vaccine (MenACWY-CRM) was administered intramuscularly in the nondominant arm

Sponsors

GlaxoSmithKline
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
SINGLE (Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
2 Years to 10 Years
Healthy volunteers
Yes

Inclusion criteria

* Healthy children, 2 to 10 years of age who have up to date routine childhood vaccination, according to U.S. ACIP recommendations

Exclusion criteria

1. Unwilling or unable to give written informed assent or consent to participate in the study. 2. Perceived to be unreliable or unavailable for the duration of the study period. 3. Previous confirmed or suspected disease caused by N. meningitidis. 4. Previously immunized with a meningococcal vaccine (licensed or investigational). 5. Receipt of any investigational or non-registered product within 30 days prior to enrolment or who expect to receive an investigational drug or vaccine prior to the completion of the study. 6. Receipt or plan to receive any vaccines within 30 days before and after administration of each dose of the study vaccine. (certain exceptions influenza vaccines apply) 7. Significant acute infection within the 7 days prior to enrolment or body temperature of 38°C or greater within 3 days prior to enrolment. 8. Previous serious acute, chronic or progressive disease, epilepsy or any progressive neurological disease or history of Guillain-Barre syndrome. 9. History of any anaphylaxis, serious vaccine reactions, or allergy to any vaccine components 10. Impairment/alteration of immune function, either congenital or acquired or resulting from (for example): * receipt of immunosuppressive therapy, * receipt of immunostimulants, * receipt of parenteral immunoglobulin preparation, blood products, and/or plasma derivatives. 11. Known bleeding diathesis, or any condition that may be associated with a prolonged bleeding time.

Design outcomes

Primary

MeasureTime frameDescription
Non-inferiority of Two Vaccinations Versus One Vaccination of MenACWY-CRM, by Age Cohort, as Measured by the Percentage of Subjects With hSBA Seroresponse Against N. Meningitidis Serogroups A, C, W and Y, at 1 Month After Last VaccinationOne Month After Last Vaccination ( day 86)Immunogenicity was measured as the percentage of subjects with overall seroresponse and associated 2-sided 97.5% Clopper-Pearson confidence interval (CI), directed against N. meningitidis serogroups A, C, W and Y, by serum bactericidal assay using human complement (hSBA) at 1 month after one vaccination or two vaccinations of MenACWY-CRM given two months apart. Seroresponse is defined as: a. postvaccination hSBA titer ≥1:8 for subjects with a prevaccination hSBA titer \<1:4; b. for subjects with a prevaccination hSBA ≥1:4, an increase of at least four times of the prevaccination hSBA titer.
Superiority of Two Vaccinations Versus One Vaccination of MenACWY-CRM, by Age Cohort, as Measured by the Percentage of Subjects With hSBA Seroresponse Against N. Meningitidis Serogroups A, C, W and Y, at 1 Month After Last VaccinationOne Month After Last Vaccination (day 86)Immunogenicity was measured as the percentage of subjects with overall seroresponse and associated 2-sided 95% CI, directed against N. meningitidis serogroups A, C, W and Y, by hSBA at 1 month after one vaccination or two vaccinations of MenACWY-CRM. Seroresponse -postvaccination hSBA titer ≥1:8 for subjects with a prevaccination hSBA titer \<1:4 and for subjects with a prevaccination hSBA ≥1:4, an increase of at least four times of the prevaccination hSBA titer.

Secondary

MeasureTime frameDescription
Percentage of Subjects With hSBA Titer ≥1:8, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Year After One or Two Vaccination(s) of MenACWY-CRMOne year after one vaccination or two vaccinations (day 422).Immunogenicity was measured as the percentage of subjects with hSBA titer ≥1:8 and associated 95% CI at one year after one vaccination or two vaccinations of MenACWY-CRM.
Geometric Mean Titers of Subjects, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Year After One or Two Vaccination(s) of MenACWY-CRMOne year after one vaccination or two vaccinations (day 422).Immunogenicity was measured as hSBA GMTs and 95% CI against N. meningitidis serogroups A, C, W and Y at one year after one vaccination or two vaccinations of MenACWY-CRM.
Percentage of Subjects With hSBA Titer ≥1:8, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Month After One or Two Vaccination(s) of MenACWY-CRMOne Month After Last Vaccination (day 86)Immunogenicity was measured as the percentage of subjects who achieved hSBA titer ≥1:8 and associated 95% CI, at one month after one vaccination or two vaccinations of MenACWY-CRM.
Numbers of 6 to 10 Years-Old Subjects Who Reported Solicited Local and Systemic Adverse Events After Any VaccinationFrom Days 1-7 after each vaccinationSafety was assessed as the number of 6 to 10 years-old subjects who reported solicited local and systemic adverse events from day 1 up to and including day 7 after one or two vaccination(s) of MenACWY-CRM
Number of Subjects Who Reported Selected AEs After Any VaccinationDay 1 to Day 86Safety was assessed as the number subjects who reported Selected AEs from day 1 up to day 86 after one or two vaccination(s) of MenACWY-CRM
Number of 2 to 5 Years-Old Subjects Who Reported Solicited Local and Systemic Adverse Events After Any VaccinationFrom Days 1-7 after each vaccinationSafety was assessed as the number of 2 to 5 years-old subjects who reported solicited local and systemic adverse events from day 1 up to and including day 7 after one or two vaccination(s) of MenACWY-CRM
Geometric Mean Titers of Subjects, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Month After One or Two Vaccination(s) of MenACWY-CRMOne Month After Last Vaccination (day 86)Immunogenicity was measured as hSBA geometric mean titers (GMTs) and 95% CI against N. meningitidis serogroups A, C, W and Y, one month after one vaccination or two vaccinations of MenACWY-CRM.

Countries

United States

Participant flow

Recruitment details

Subjects were enrolled at 22 locations

Pre-assignment details

All enrolled subjects were included in the trial.

Participants by arm

ArmCount
2 Through 5 Years (2 Vac)
Subjects 2-5 years of age received two MenACWY-CRM vaccinations
176
2 Through 5 Years (1 Vac)
Subjects 2-5 years of age received one MenACWY-CRM vaccination
183
6 Through 10 Years (2 Vac)
Subjects 6-10 years of age received two MenACWY-CRM vaccinations
180
6 Through 10 Years (1 Vac)
Subjects 6-10 years of age received one MenACWY-CRM vaccination
176
Total715

Withdrawals & dropouts

PeriodReasonFG000FG001FG002FG003
Overall StudyAdministrative reason4403
Overall StudyAdverse Event0001
Overall StudyLost to Follow-up1115911
Overall StudyOther1011
Overall StudyProtocol Violation1111
Overall StudyWithdrawal by Subject4002

Baseline characteristics

Characteristic2 Through 5 Years (2 Vac)2 Through 5 Years (1 Vac)6 Through 10 Years (2 Vac)6 Through 10 Years (1 Vac)Total
Age, Continuous3.5 year
STANDARD_DEVIATION 1.1
3.6 year
STANDARD_DEVIATION 1.2
7.8 year
STANDARD_DEVIATION 1.4
7.8 year
STANDARD_DEVIATION 1.4
5.7 year
STANDARD_DEVIATION 2.5
Sex: Female, Male
Female
84 Participants88 Participants97 Participants87 Participants356 Participants
Sex: Female, Male
Male
92 Participants95 Participants83 Participants89 Participants359 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
EG004
affected / at risk
deaths
Total, all-cause mortality
— / —— / —— / —— / —— / —
other
Total, other adverse events
148 / 179142 / 179153 / 181133 / 174576 / 713
serious
Total, serious adverse events
2 / 1791 / 1791 / 1811 / 1745 / 713

Outcome results

Primary

Non-inferiority of Two Vaccinations Versus One Vaccination of MenACWY-CRM, by Age Cohort, as Measured by the Percentage of Subjects With hSBA Seroresponse Against N. Meningitidis Serogroups A, C, W and Y, at 1 Month After Last Vaccination

Immunogenicity was measured as the percentage of subjects with overall seroresponse and associated 2-sided 97.5% Clopper-Pearson confidence interval (CI), directed against N. meningitidis serogroups A, C, W and Y, by serum bactericidal assay using human complement (hSBA) at 1 month after one vaccination or two vaccinations of MenACWY-CRM given two months apart. Seroresponse is defined as: a. postvaccination hSBA titer ≥1:8 for subjects with a prevaccination hSBA titer \<1:4; b. for subjects with a prevaccination hSBA ≥1:4, an increase of at least four times of the prevaccination hSBA titer.

Time frame: One Month After Last Vaccination ( day 86)

Population: Analysis was done on the primary per-protocol (PP) dataset, i.e. the subjects who received the vaccine correctly; provided evaluable serum samples at the relevant time points; and had no major protocol violations as defined prior to analysis.

ArmMeasureGroupValue (NUMBER)
2 Through 5 Years (2 Vac)Non-inferiority of Two Vaccinations Versus One Vaccination of MenACWY-CRM, by Age Cohort, as Measured by the Percentage of Subjects With hSBA Seroresponse Against N. Meningitidis Serogroups A, C, W and Y, at 1 Month After Last VaccinationMenA(N=135,143,152,142)94 percentage of subjects
2 Through 5 Years (2 Vac)Non-inferiority of Two Vaccinations Versus One Vaccination of MenACWY-CRM, by Age Cohort, as Measured by the Percentage of Subjects With hSBA Seroresponse Against N. Meningitidis Serogroups A, C, W and Y, at 1 Month After Last VaccinationMenC(N=131,140,149,142)92 percentage of subjects
2 Through 5 Years (2 Vac)Non-inferiority of Two Vaccinations Versus One Vaccination of MenACWY-CRM, by Age Cohort, as Measured by the Percentage of Subjects With hSBA Seroresponse Against N. Meningitidis Serogroups A, C, W and Y, at 1 Month After Last VaccinationMenW(N=128,135,148,138)75 percentage of subjects
2 Through 5 Years (2 Vac)Non-inferiority of Two Vaccinations Versus One Vaccination of MenACWY-CRM, by Age Cohort, as Measured by the Percentage of Subjects With hSBA Seroresponse Against N. Meningitidis Serogroups A, C, W and Y, at 1 Month After Last VaccinationMenY(N=128,133,148,142)91 percentage of subjects
2 Through 5 Years (1 Vac)Non-inferiority of Two Vaccinations Versus One Vaccination of MenACWY-CRM, by Age Cohort, as Measured by the Percentage of Subjects With hSBA Seroresponse Against N. Meningitidis Serogroups A, C, W and Y, at 1 Month After Last VaccinationMenC(N=131,140,149,142)65 percentage of subjects
2 Through 5 Years (1 Vac)Non-inferiority of Two Vaccinations Versus One Vaccination of MenACWY-CRM, by Age Cohort, as Measured by the Percentage of Subjects With hSBA Seroresponse Against N. Meningitidis Serogroups A, C, W and Y, at 1 Month After Last VaccinationMenW(N=128,135,148,138)61 percentage of subjects
2 Through 5 Years (1 Vac)Non-inferiority of Two Vaccinations Versus One Vaccination of MenACWY-CRM, by Age Cohort, as Measured by the Percentage of Subjects With hSBA Seroresponse Against N. Meningitidis Serogroups A, C, W and Y, at 1 Month After Last VaccinationMenY(N=128,133,148,142)64 percentage of subjects
2 Through 5 Years (1 Vac)Non-inferiority of Two Vaccinations Versus One Vaccination of MenACWY-CRM, by Age Cohort, as Measured by the Percentage of Subjects With hSBA Seroresponse Against N. Meningitidis Serogroups A, C, W and Y, at 1 Month After Last VaccinationMenA(N=135,143,152,142)75 percentage of subjects
6 Through 10 Years (2 Vac)Non-inferiority of Two Vaccinations Versus One Vaccination of MenACWY-CRM, by Age Cohort, as Measured by the Percentage of Subjects With hSBA Seroresponse Against N. Meningitidis Serogroups A, C, W and Y, at 1 Month After Last VaccinationMenW(N=128,135,148,138)58 percentage of subjects
6 Through 10 Years (2 Vac)Non-inferiority of Two Vaccinations Versus One Vaccination of MenACWY-CRM, by Age Cohort, as Measured by the Percentage of Subjects With hSBA Seroresponse Against N. Meningitidis Serogroups A, C, W and Y, at 1 Month After Last VaccinationMenC(N=131,140,149,142)93 percentage of subjects
6 Through 10 Years (2 Vac)Non-inferiority of Two Vaccinations Versus One Vaccination of MenACWY-CRM, by Age Cohort, as Measured by the Percentage of Subjects With hSBA Seroresponse Against N. Meningitidis Serogroups A, C, W and Y, at 1 Month After Last VaccinationMenY(N=128,133,148,142)89 percentage of subjects
6 Through 10 Years (2 Vac)Non-inferiority of Two Vaccinations Versus One Vaccination of MenACWY-CRM, by Age Cohort, as Measured by the Percentage of Subjects With hSBA Seroresponse Against N. Meningitidis Serogroups A, C, W and Y, at 1 Month After Last VaccinationMenA(N=135,143,152,142)89 percentage of subjects
6 Through 10 Years (1 Vac)Non-inferiority of Two Vaccinations Versus One Vaccination of MenACWY-CRM, by Age Cohort, as Measured by the Percentage of Subjects With hSBA Seroresponse Against N. Meningitidis Serogroups A, C, W and Y, at 1 Month After Last VaccinationMenY(N=128,133,148,142)60 percentage of subjects
6 Through 10 Years (1 Vac)Non-inferiority of Two Vaccinations Versus One Vaccination of MenACWY-CRM, by Age Cohort, as Measured by the Percentage of Subjects With hSBA Seroresponse Against N. Meningitidis Serogroups A, C, W and Y, at 1 Month After Last VaccinationMenC(N=131,140,149,142)73 percentage of subjects
6 Through 10 Years (1 Vac)Non-inferiority of Two Vaccinations Versus One Vaccination of MenACWY-CRM, by Age Cohort, as Measured by the Percentage of Subjects With hSBA Seroresponse Against N. Meningitidis Serogroups A, C, W and Y, at 1 Month After Last VaccinationMenA(N=135,143,152,142)77 percentage of subjects
6 Through 10 Years (1 Vac)Non-inferiority of Two Vaccinations Versus One Vaccination of MenACWY-CRM, by Age Cohort, as Measured by the Percentage of Subjects With hSBA Seroresponse Against N. Meningitidis Serogroups A, C, W and Y, at 1 Month After Last VaccinationMenW(N=128,135,148,138)54 percentage of subjects
Comparison: Non-inferiority of seroresponse of two vaccinations vs.one vaccination for age cohort (2 to 5 years of age) for MenA97.5% CI: [10, 28.9]MN method
Comparison: Non-inferiority of seroresponse of two vaccinations vs. one vaccination for age cohort (2 to 5 years of age) for MenC97.5% CI: [16.9, 37.7]MN method
Comparison: Non-inferiority of seroresponse of two vaccinations vs. one vaccination for age cohort (2 to 5 years of age) for MenW97.5% CI: [1.4, 26.7]MN method
Comparison: Non-inferiority of seroresponse of two vaccinations vs. one vaccination for age cohort (2 to 5 years of age) for MenY97.5% CI: [15.6, 37.6]MN method
Comparison: Non-inferiority of seroresponse of two vaccinations vs. one vaccination for age cohort (6 to 10 years of age) for MenA97.5% CI: [1.7, 21.3]MN method
Comparison: Non-inferiority of seroresponse of two vaccinations vs. one vaccination for age cohort (6 to 10 years of age) for MenC97.5% CI: [9.9, 29.2]MN method
Comparison: Non-inferiority of seroresponse of two vaccinations vs. one vaccination for age cohort (6 to 10 years of age) for MenW97.5% CI: [-8.6, 17.4]MN method
Comparison: Non-inferiority of seroresponse for two vaccinations vs. one vaccination for age cohort (6 to 10 years of age) for MenY97.5% CI: [18.4, 40]MN method
Primary

Superiority of Two Vaccinations Versus One Vaccination of MenACWY-CRM, by Age Cohort, as Measured by the Percentage of Subjects With hSBA Seroresponse Against N. Meningitidis Serogroups A, C, W and Y, at 1 Month After Last Vaccination

Immunogenicity was measured as the percentage of subjects with overall seroresponse and associated 2-sided 95% CI, directed against N. meningitidis serogroups A, C, W and Y, by hSBA at 1 month after one vaccination or two vaccinations of MenACWY-CRM. Seroresponse -postvaccination hSBA titer ≥1:8 for subjects with a prevaccination hSBA titer \<1:4 and for subjects with a prevaccination hSBA ≥1:4, an increase of at least four times of the prevaccination hSBA titer.

Time frame: One Month After Last Vaccination (day 86)

Population: Analysis was done on the FAS dataset - All subjects in the exposed dataset who provided evaluable serum samples whose assay results were available for at least 1 serogroup on day 1 and 1 post baseline visit.

ArmMeasureGroupValue (NUMBER)
2 Through 5 Years (2 Vac)Superiority of Two Vaccinations Versus One Vaccination of MenACWY-CRM, by Age Cohort, as Measured by the Percentage of Subjects With hSBA Seroresponse Against N. Meningitidis Serogroups A, C, W and Y, at 1 Month After Last VaccinationMenA(N=158,163,171,163)95 percentage of subjects
2 Through 5 Years (2 Vac)Superiority of Two Vaccinations Versus One Vaccination of MenACWY-CRM, by Age Cohort, as Measured by the Percentage of Subjects With hSBA Seroresponse Against N. Meningitidis Serogroups A, C, W and Y, at 1 Month After Last VaccinationMenC(N=154,157,167,162)93 percentage of subjects
2 Through 5 Years (2 Vac)Superiority of Two Vaccinations Versus One Vaccination of MenACWY-CRM, by Age Cohort, as Measured by the Percentage of Subjects With hSBA Seroresponse Against N. Meningitidis Serogroups A, C, W and Y, at 1 Month After Last VaccinationMenW(N=150,154,167,159)75 percentage of subjects
2 Through 5 Years (2 Vac)Superiority of Two Vaccinations Versus One Vaccination of MenACWY-CRM, by Age Cohort, as Measured by the Percentage of Subjects With hSBA Seroresponse Against N. Meningitidis Serogroups A, C, W and Y, at 1 Month After Last VaccinationMenY(N=150,153,167,163)90 percentage of subjects
2 Through 5 Years (1 Vac)Superiority of Two Vaccinations Versus One Vaccination of MenACWY-CRM, by Age Cohort, as Measured by the Percentage of Subjects With hSBA Seroresponse Against N. Meningitidis Serogroups A, C, W and Y, at 1 Month After Last VaccinationMenC(N=154,157,167,162)65 percentage of subjects
2 Through 5 Years (1 Vac)Superiority of Two Vaccinations Versus One Vaccination of MenACWY-CRM, by Age Cohort, as Measured by the Percentage of Subjects With hSBA Seroresponse Against N. Meningitidis Serogroups A, C, W and Y, at 1 Month After Last VaccinationMenW(N=150,154,167,159)61 percentage of subjects
2 Through 5 Years (1 Vac)Superiority of Two Vaccinations Versus One Vaccination of MenACWY-CRM, by Age Cohort, as Measured by the Percentage of Subjects With hSBA Seroresponse Against N. Meningitidis Serogroups A, C, W and Y, at 1 Month After Last VaccinationMenY(N=150,153,167,163)62 percentage of subjects
2 Through 5 Years (1 Vac)Superiority of Two Vaccinations Versus One Vaccination of MenACWY-CRM, by Age Cohort, as Measured by the Percentage of Subjects With hSBA Seroresponse Against N. Meningitidis Serogroups A, C, W and Y, at 1 Month After Last VaccinationMenA(N=158,163,171,163)77 percentage of subjects
6 Through 10 Years (2 Vac)Superiority of Two Vaccinations Versus One Vaccination of MenACWY-CRM, by Age Cohort, as Measured by the Percentage of Subjects With hSBA Seroresponse Against N. Meningitidis Serogroups A, C, W and Y, at 1 Month After Last VaccinationMenW(N=150,154,167,159)57 percentage of subjects
6 Through 10 Years (2 Vac)Superiority of Two Vaccinations Versus One Vaccination of MenACWY-CRM, by Age Cohort, as Measured by the Percentage of Subjects With hSBA Seroresponse Against N. Meningitidis Serogroups A, C, W and Y, at 1 Month After Last VaccinationMenC(N=154,157,167,162)93 percentage of subjects
6 Through 10 Years (2 Vac)Superiority of Two Vaccinations Versus One Vaccination of MenACWY-CRM, by Age Cohort, as Measured by the Percentage of Subjects With hSBA Seroresponse Against N. Meningitidis Serogroups A, C, W and Y, at 1 Month After Last VaccinationMenY(N=150,153,167,163)89 percentage of subjects
6 Through 10 Years (2 Vac)Superiority of Two Vaccinations Versus One Vaccination of MenACWY-CRM, by Age Cohort, as Measured by the Percentage of Subjects With hSBA Seroresponse Against N. Meningitidis Serogroups A, C, W and Y, at 1 Month After Last VaccinationMenA(N=158,163,171,163)89 percentage of subjects
6 Through 10 Years (1 Vac)Superiority of Two Vaccinations Versus One Vaccination of MenACWY-CRM, by Age Cohort, as Measured by the Percentage of Subjects With hSBA Seroresponse Against N. Meningitidis Serogroups A, C, W and Y, at 1 Month After Last VaccinationMenY(N=150,153,167,163)60 percentage of subjects
6 Through 10 Years (1 Vac)Superiority of Two Vaccinations Versus One Vaccination of MenACWY-CRM, by Age Cohort, as Measured by the Percentage of Subjects With hSBA Seroresponse Against N. Meningitidis Serogroups A, C, W and Y, at 1 Month After Last VaccinationMenC(N=154,157,167,162)75 percentage of subjects
6 Through 10 Years (1 Vac)Superiority of Two Vaccinations Versus One Vaccination of MenACWY-CRM, by Age Cohort, as Measured by the Percentage of Subjects With hSBA Seroresponse Against N. Meningitidis Serogroups A, C, W and Y, at 1 Month After Last VaccinationMenA(N=158,163,171,163)79 percentage of subjects
6 Through 10 Years (1 Vac)Superiority of Two Vaccinations Versus One Vaccination of MenACWY-CRM, by Age Cohort, as Measured by the Percentage of Subjects With hSBA Seroresponse Against N. Meningitidis Serogroups A, C, W and Y, at 1 Month After Last VaccinationMenW(N=150,154,167,159)52 percentage of subjects
Comparison: Superiority for age cohort (2 through 5 years of age) for MenA was demonstrated if the lower limit of the 2-sided (1-2α) % CI for seroresponse increase between the 2-dose vaccination schedule and the 1-dose vaccination schedule was above 10% for MenA98.75% CI: [9.1, 28]MN method
Comparison: Superiority for age cohort (2 through 5 years of age) for MenC was demonstrated if the lower limit of the 2-sided (1-2α) % CI for seroresponse increase between the 2-dose vaccination schedule and the 1-dose vaccination schedule was above 10% for MenC98.75% CI: [17.1, 38.7]MN method
Comparison: Superiority for age cohort (2 through 5 years of age) for MenW was demonstrated if the lower limit of the 2-sided (1-2α) % CI for seroresponse increase between the 2-dose vaccination schedule and the 1-dose vaccination schedule was above 10% for MenW98.75% CI: [1, 27.1]MN method
Comparison: Superiority for age cohort (2 through 5 years of age) for MenY was demonstrated if the lower limit of the 2-sided (1-2α) % CI for seroresponse increase between the 2-dose vaccination schedule and the 1-dose vaccination schedule was above 10% for MenY98.75% CI: [16.2, 39.3]MN method
Comparison: Superiority for age cohort (6 through 10 years of age) for MenA was demonstrated if the lower limit of the 2-sided (1-2α) % CI for seroresponse increase between the 2-dose vaccination schedule and the 1-dose vaccination schedule was above 10% for MenA98.75% CI: [1, 21.2]MN method
Comparison: Superiority for age cohort (6 through 10 years of age) for MenC was demonstrated if the lower limit of the 2-sided (1-2α) % CI for seroresponse increase between the 2-dose vaccination schedule and the 1-dose vaccination schedule was above 10% for MenC97.5% CI: [9.5, 27.1]MN method
Comparison: Superiority for age cohort (6 through 10 years of age) for MenW was demonstrated if the lower limit of the 2-sided (1-2α) % CI for seroresponse increase between the 2-dose vaccination schedule and the 1-dose vaccination schedule was above 10% for MenW98.75% CI: [-8.4, 18.8]MN method
Comparison: Superiority for age cohort (6 through 10 years of age) for MenY was demonstrated if the lower limit of the 2-sided (1-2α) % CI for seroresponse increase between the 2-dose vaccination schedule and the 1-dose vaccination schedule was above 10% for MenY98.75% CI: [17, 39.6]MN method
Secondary

Geometric Mean Titers of Subjects, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Month After One or Two Vaccination(s) of MenACWY-CRM

Immunogenicity was measured as hSBA geometric mean titers (GMTs) and 95% CI against N. meningitidis serogroups A, C, W and Y, one month after one vaccination or two vaccinations of MenACWY-CRM.

Time frame: One Month After Last Vaccination (day 86)

Population: Analysis was done on the primary PP dataset

ArmMeasureGroupValue (GEOMETRIC_MEAN)
2 Through 5 Years (2 Vac)Geometric Mean Titers of Subjects, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Month After One or Two Vaccination(s) of MenACWY-CRMMenA(N=135,143,152,142)68 Titer
2 Through 5 Years (2 Vac)Geometric Mean Titers of Subjects, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Month After One or Two Vaccination(s) of MenACWY-CRMMenC(N=131,140,149,142)146 Titer
2 Through 5 Years (2 Vac)Geometric Mean Titers of Subjects, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Month After One or Two Vaccination(s) of MenACWY-CRMMenW(N=128,135,148,138)191 Titer
2 Through 5 Years (2 Vac)Geometric Mean Titers of Subjects, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Month After One or Two Vaccination(s) of MenACWY-CRMMenY(N=128,133,148,142)70 Titer
2 Through 5 Years (1 Vac)Geometric Mean Titers of Subjects, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Month After One or Two Vaccination(s) of MenACWY-CRMMenC(N=131,140,149,142)22 Titer
2 Through 5 Years (1 Vac)Geometric Mean Titers of Subjects, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Month After One or Two Vaccination(s) of MenACWY-CRMMenW(N=128,135,148,138)104 Titer
2 Through 5 Years (1 Vac)Geometric Mean Titers of Subjects, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Month After One or Two Vaccination(s) of MenACWY-CRMMenY(N=128,133,148,142)15 Titer
2 Through 5 Years (1 Vac)Geometric Mean Titers of Subjects, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Month After One or Two Vaccination(s) of MenACWY-CRMMenA(N=135,143,152,142)21 Titer
6 Through 10 Years (2 Vac)Geometric Mean Titers of Subjects, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Month After One or Two Vaccination(s) of MenACWY-CRMMenW(N=128,135,148,138)169 Titer
6 Through 10 Years (2 Vac)Geometric Mean Titers of Subjects, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Month After One or Two Vaccination(s) of MenACWY-CRMMenC(N=131,140,149,142)165 Titer
6 Through 10 Years (2 Vac)Geometric Mean Titers of Subjects, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Month After One or Two Vaccination(s) of MenACWY-CRMMenY(N=128,133,148,142)76 Titer
6 Through 10 Years (2 Vac)Geometric Mean Titers of Subjects, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Month After One or Two Vaccination(s) of MenACWY-CRMMenA(N=135,143,152,142)67 Titer
6 Through 10 Years (1 Vac)Geometric Mean Titers of Subjects, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Month After One or Two Vaccination(s) of MenACWY-CRMMenY(N=128,133,148,142)26 Titer
6 Through 10 Years (1 Vac)Geometric Mean Titers of Subjects, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Month After One or Two Vaccination(s) of MenACWY-CRMMenC(N=131,140,149,142)67 Titer
6 Through 10 Years (1 Vac)Geometric Mean Titers of Subjects, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Month After One or Two Vaccination(s) of MenACWY-CRMMenA(N=135,143,152,142)36 Titer
6 Through 10 Years (1 Vac)Geometric Mean Titers of Subjects, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Month After One or Two Vaccination(s) of MenACWY-CRMMenW(N=128,135,148,138)95 Titer
Secondary

Geometric Mean Titers of Subjects, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Year After One or Two Vaccination(s) of MenACWY-CRM

Immunogenicity was measured as hSBA GMTs and 95% CI against N. meningitidis serogroups A, C, W and Y at one year after one vaccination or two vaccinations of MenACWY-CRM.

Time frame: One year after one vaccination or two vaccinations (day 422).

Population: Analysis was done on the persistence PP dataset

ArmMeasureGroupValue (GEOMETRIC_MEAN)
2 Through 5 Years (2 Vac)Geometric Mean Titers of Subjects, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Year After One or Two Vaccination(s) of MenACWY-CRMMenA(N=122,131,142,130)4.72 Titers
2 Through 5 Years (2 Vac)Geometric Mean Titers of Subjects, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Year After One or Two Vaccination(s) of MenACWY-CRMMenC(N=123,128,141,130)10 Titers
2 Through 5 Years (2 Vac)Geometric Mean Titers of Subjects, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Year After One or Two Vaccination(s) of MenACWY-CRMMenW(N=121,127,139,130)49 Titers
2 Through 5 Years (2 Vac)Geometric Mean Titers of Subjects, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Year After One or Two Vaccination(s) of MenACWY-CRMMenY(N=121,122,140,130)14 Titers
2 Through 5 Years (1 Vac)Geometric Mean Titers of Subjects, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Year After One or Two Vaccination(s) of MenACWY-CRMMenC(N=123,128,141,130)7.03 Titers
2 Through 5 Years (1 Vac)Geometric Mean Titers of Subjects, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Year After One or Two Vaccination(s) of MenACWY-CRMMenW(N=121,127,139,130)39 Titers
2 Through 5 Years (1 Vac)Geometric Mean Titers of Subjects, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Year After One or Two Vaccination(s) of MenACWY-CRMMenY(N=121,122,140,130)9.88 Titers
2 Through 5 Years (1 Vac)Geometric Mean Titers of Subjects, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Year After One or Two Vaccination(s) of MenACWY-CRMMenA(N=122,131,142,130)2.66 Titers
6 Through 10 Years (2 Vac)Geometric Mean Titers of Subjects, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Year After One or Two Vaccination(s) of MenACWY-CRMMenW(N=121,127,139,130)64 Titers
6 Through 10 Years (2 Vac)Geometric Mean Titers of Subjects, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Year After One or Two Vaccination(s) of MenACWY-CRMMenC(N=123,128,141,130)24 Titers
6 Through 10 Years (2 Vac)Geometric Mean Titers of Subjects, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Year After One or Two Vaccination(s) of MenACWY-CRMMenY(N=121,122,140,130)20 Titers
6 Through 10 Years (2 Vac)Geometric Mean Titers of Subjects, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Year After One or Two Vaccination(s) of MenACWY-CRMMenA(N=122,131,142,130)4.66 Titers
6 Through 10 Years (1 Vac)Geometric Mean Titers of Subjects, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Year After One or Two Vaccination(s) of MenACWY-CRMMenY(N=121,122,140,130)13 Titers
6 Through 10 Years (1 Vac)Geometric Mean Titers of Subjects, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Year After One or Two Vaccination(s) of MenACWY-CRMMenC(N=123,128,141,130)15 Titers
6 Through 10 Years (1 Vac)Geometric Mean Titers of Subjects, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Year After One or Two Vaccination(s) of MenACWY-CRMMenA(N=122,131,142,130)3.56 Titers
6 Through 10 Years (1 Vac)Geometric Mean Titers of Subjects, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Year After One or Two Vaccination(s) of MenACWY-CRMMenW(N=121,127,139,130)47 Titers
Secondary

Number of 2 to 5 Years-Old Subjects Who Reported Solicited Local and Systemic Adverse Events After Any Vaccination

Safety was assessed as the number of 2 to 5 years-old subjects who reported solicited local and systemic adverse events from day 1 up to and including day 7 after one or two vaccination(s) of MenACWY-CRM

Time frame: From Days 1-7 after each vaccination

Population: Analysis was done on the safety dataset i.e. the subjects in the exposed population who provided postvaccination safety data.

ArmMeasureGroupValue (NUMBER)
2 Through 5 Years (2 Vac)Number of 2 to 5 Years-Old Subjects Who Reported Solicited Local and Systemic Adverse Events After Any VaccinationTenderness (N=174,175)84 subjects
2 Through 5 Years (2 Vac)Number of 2 to 5 Years-Old Subjects Who Reported Solicited Local and Systemic Adverse Events After Any VaccinationSleepiness(N=173,175)49 subjects
2 Through 5 Years (2 Vac)Number of 2 to 5 Years-Old Subjects Who Reported Solicited Local and Systemic Adverse Events After Any VaccinationErythema(N=173,175)25 subjects
2 Through 5 Years (2 Vac)Number of 2 to 5 Years-Old Subjects Who Reported Solicited Local and Systemic Adverse Events After Any VaccinationIrritability(N=173,175)51 subjects
2 Through 5 Years (2 Vac)Number of 2 to 5 Years-Old Subjects Who Reported Solicited Local and Systemic Adverse Events After Any VaccinationChange in Eating Habits(N=173,175)26 subjects
2 Through 5 Years (2 Vac)Number of 2 to 5 Years-Old Subjects Who Reported Solicited Local and Systemic Adverse Events After Any VaccinationBody Temperature >=38.0(N=174,175)9 subjects
2 Through 5 Years (2 Vac)Number of 2 to 5 Years-Old Subjects Who Reported Solicited Local and Systemic Adverse Events After Any VaccinationInduration(N=173,175)19 subjects
2 Through 5 Years (1 Vac)Number of 2 to 5 Years-Old Subjects Who Reported Solicited Local and Systemic Adverse Events After Any VaccinationBody Temperature >=38.0(N=174,175)12 subjects
2 Through 5 Years (1 Vac)Number of 2 to 5 Years-Old Subjects Who Reported Solicited Local and Systemic Adverse Events After Any VaccinationErythema(N=173,175)11 subjects
2 Through 5 Years (1 Vac)Number of 2 to 5 Years-Old Subjects Who Reported Solicited Local and Systemic Adverse Events After Any VaccinationInduration(N=173,175)7 subjects
2 Through 5 Years (1 Vac)Number of 2 to 5 Years-Old Subjects Who Reported Solicited Local and Systemic Adverse Events After Any VaccinationTenderness (N=174,175)79 subjects
2 Through 5 Years (1 Vac)Number of 2 to 5 Years-Old Subjects Who Reported Solicited Local and Systemic Adverse Events After Any VaccinationChange in Eating Habits(N=173,175)30 subjects
2 Through 5 Years (1 Vac)Number of 2 to 5 Years-Old Subjects Who Reported Solicited Local and Systemic Adverse Events After Any VaccinationSleepiness(N=173,175)46 subjects
2 Through 5 Years (1 Vac)Number of 2 to 5 Years-Old Subjects Who Reported Solicited Local and Systemic Adverse Events After Any VaccinationIrritability(N=173,175)50 subjects
Comparison: The safety of two vaccine groups was compared by calculating risk ratio of the proportions of subjects who experienced erythema in the two doses versus in the one dose of MenACWY-CRM95% CI: [1.17, 4.53]
Comparison: The safety of two vaccine groups was compared by calculating risk ratio of the proportions of subjects who experienced induration in the two doses versus in the one dose of MenACWY-CRM95% CI: [1.18, 6.36]
Comparison: The safety of two vaccine groups was compared by calculating risk ratio of the proportions of subjects who experienced tenderness in the two doses versus in the one dose of MenACWY-CRM95% CI: [0.85, 1.34]
Comparison: The safety of two vaccine groups was compared by calculating risk ratio of the proportions of subjects who experienced change in eating habits in the two doses versus in the one dose of MenACWY-CRM95% CI: [0.54, 1.42]
Comparison: The safety of two vaccine groups was compared by calculating risk ratio of the proportions of subjects who experienced sleepiness in the two doses versus in the one dose of MenACWY-CRM95% CI: [0.76, 1.52]
Comparison: The safety of two vaccine groups was compared by calculating risk ratio of the proportions of subjects who experienced irritability in the two doses versus in the one dose of MenACWY-CRM95% CI: [0.74, 1.43]
Comparison: The safety of two vaccine groups was compared by calculating risk ratio of the proportions of subjects who experienced fever (≥38 °C) in the two doses versus in the one dose of MenACWY-CRM95% CI: [0.33, 1.74]
Secondary

Number of Subjects Who Reported Selected AEs After Any Vaccination

Safety was assessed as the number subjects who reported Selected AEs from day 1 up to day 422 after one or two vaccination(s) of MenACWY-CRM

Time frame: Day 1 to Day 422

Population: Analysis was done on safety set

ArmMeasureGroupValue (NUMBER)
2 Through 5 Years (2 Vac)Number of Subjects Who Reported Selected AEs After Any VaccinationSAEs2 Subjects
2 Through 5 Years (2 Vac)Number of Subjects Who Reported Selected AEs After Any VaccinationAt least possibly related medically attended AEs1 Subjects
2 Through 5 Years (2 Vac)Number of Subjects Who Reported Selected AEs After Any VaccinationDeaths0 Subjects
2 Through 5 Years (2 Vac)Number of Subjects Who Reported Selected AEs After Any VaccinationAEs resulting in premature withdrawal0 Subjects
2 Through 5 Years (2 Vac)Number of Subjects Who Reported Selected AEs After Any VaccinationMedically attended AEs103 Subjects
2 Through 5 Years (1 Vac)Number of Subjects Who Reported Selected AEs After Any VaccinationAEs resulting in premature withdrawal0 Subjects
2 Through 5 Years (1 Vac)Number of Subjects Who Reported Selected AEs After Any VaccinationSAEs1 Subjects
2 Through 5 Years (1 Vac)Number of Subjects Who Reported Selected AEs After Any VaccinationDeaths0 Subjects
2 Through 5 Years (1 Vac)Number of Subjects Who Reported Selected AEs After Any VaccinationAt least possibly related medically attended AEs4 Subjects
2 Through 5 Years (1 Vac)Number of Subjects Who Reported Selected AEs After Any VaccinationMedically attended AEs101 Subjects
6 Through 10 Years (2 Vac)Number of Subjects Who Reported Selected AEs After Any VaccinationAEs resulting in premature withdrawal0 Subjects
6 Through 10 Years (2 Vac)Number of Subjects Who Reported Selected AEs After Any VaccinationMedically attended AEs95 Subjects
6 Through 10 Years (2 Vac)Number of Subjects Who Reported Selected AEs After Any VaccinationAt least possibly related medically attended AEs1 Subjects
6 Through 10 Years (2 Vac)Number of Subjects Who Reported Selected AEs After Any VaccinationSAEs1 Subjects
6 Through 10 Years (2 Vac)Number of Subjects Who Reported Selected AEs After Any VaccinationDeaths0 Subjects
6 Through 10 Years (1 Vac)Number of Subjects Who Reported Selected AEs After Any VaccinationSAEs1 Subjects
6 Through 10 Years (1 Vac)Number of Subjects Who Reported Selected AEs After Any VaccinationAt least possibly related medically attended AEs2 Subjects
6 Through 10 Years (1 Vac)Number of Subjects Who Reported Selected AEs After Any VaccinationMedically attended AEs97 Subjects
6 Through 10 Years (1 Vac)Number of Subjects Who Reported Selected AEs After Any VaccinationAEs resulting in premature withdrawal1 Subjects
6 Through 10 Years (1 Vac)Number of Subjects Who Reported Selected AEs After Any VaccinationDeaths0 Subjects
Secondary

Number of Subjects Who Reported Selected AEs After Any Vaccination

Safety was assessed as the number subjects who reported Selected AEs from day 1 up to day 86 after one or two vaccination(s) of MenACWY-CRM

Time frame: Day 1 to Day 86

Population: Analysis was done on Safety Set Unsolicited AEs

ArmMeasureGroupValue (NUMBER)
2 Through 5 Years (2 Vac)Number of Subjects Who Reported Selected AEs After Any VaccinationMedically attended AEs50 Subjects
2 Through 5 Years (2 Vac)Number of Subjects Who Reported Selected AEs After Any VaccinationSAEs1 Subjects
2 Through 5 Years (2 Vac)Number of Subjects Who Reported Selected AEs After Any VaccinationAt least possibly related SAEs0 Subjects
2 Through 5 Years (2 Vac)Number of Subjects Who Reported Selected AEs After Any VaccinationAt least possibly related medically attended AEs0 Subjects
2 Through 5 Years (2 Vac)Number of Subjects Who Reported Selected AEs After Any VaccinationAEs resulting in premature withdrawal0 Subjects
2 Through 5 Years (2 Vac)Number of Subjects Who Reported Selected AEs After Any VaccinationDeaths0 Subjects
2 Through 5 Years (1 Vac)Number of Subjects Who Reported Selected AEs After Any VaccinationAEs resulting in premature withdrawal0 Subjects
2 Through 5 Years (1 Vac)Number of Subjects Who Reported Selected AEs After Any VaccinationSAEs0 Subjects
2 Through 5 Years (1 Vac)Number of Subjects Who Reported Selected AEs After Any VaccinationAt least possibly related SAEs0 Subjects
2 Through 5 Years (1 Vac)Number of Subjects Who Reported Selected AEs After Any VaccinationDeaths0 Subjects
2 Through 5 Years (1 Vac)Number of Subjects Who Reported Selected AEs After Any VaccinationAt least possibly related medically attended AEs3 Subjects
2 Through 5 Years (1 Vac)Number of Subjects Who Reported Selected AEs After Any VaccinationMedically attended AEs55 Subjects
6 Through 10 Years (2 Vac)Number of Subjects Who Reported Selected AEs After Any VaccinationAEs resulting in premature withdrawal0 Subjects
6 Through 10 Years (2 Vac)Number of Subjects Who Reported Selected AEs After Any VaccinationMedically attended AEs46 Subjects
6 Through 10 Years (2 Vac)Number of Subjects Who Reported Selected AEs After Any VaccinationDeaths0 Subjects
6 Through 10 Years (2 Vac)Number of Subjects Who Reported Selected AEs After Any VaccinationSAEs0 Subjects
6 Through 10 Years (2 Vac)Number of Subjects Who Reported Selected AEs After Any VaccinationAt least possibly related SAEs0 Subjects
6 Through 10 Years (2 Vac)Number of Subjects Who Reported Selected AEs After Any VaccinationAt least possibly related medically attended AEs1 Subjects
6 Through 10 Years (1 Vac)Number of Subjects Who Reported Selected AEs After Any VaccinationDeaths0 Subjects
6 Through 10 Years (1 Vac)Number of Subjects Who Reported Selected AEs After Any VaccinationAt least possibly related SAEs0 Subjects
6 Through 10 Years (1 Vac)Number of Subjects Who Reported Selected AEs After Any VaccinationMedically attended AEs46 Subjects
6 Through 10 Years (1 Vac)Number of Subjects Who Reported Selected AEs After Any VaccinationAt least possibly related medically attended AEs1 Subjects
6 Through 10 Years (1 Vac)Number of Subjects Who Reported Selected AEs After Any VaccinationAEs resulting in premature withdrawal1 Subjects
6 Through 10 Years (1 Vac)Number of Subjects Who Reported Selected AEs After Any VaccinationSAEs0 Subjects
Secondary

Numbers of 6 to 10 Years-Old Subjects Who Reported Solicited Local and Systemic Adverse Events After Any Vaccination

Safety was assessed as the number of 6 to 10 years-old subjects who reported solicited local and systemic adverse events from day 1 up to and including day 7 after one or two vaccination(s) of MenACWY-CRM

Time frame: From Days 1-7 after each vaccination

Population: Analysis was done on the safety dataset

ArmMeasureGroupValue (NUMBER)
2 Through 5 Years (2 Vac)Numbers of 6 to 10 Years-Old Subjects Who Reported Solicited Local and Systemic Adverse Events After Any VaccinationErythema(N=178,166)23 Subjects
2 Through 5 Years (2 Vac)Numbers of 6 to 10 Years-Old Subjects Who Reported Solicited Local and Systemic Adverse Events After Any VaccinationInduration(N=178,166)24 Subjects
2 Through 5 Years (2 Vac)Numbers of 6 to 10 Years-Old Subjects Who Reported Solicited Local and Systemic Adverse Events After Any VaccinationPain(N=178,166)106 Subjects
2 Through 5 Years (2 Vac)Numbers of 6 to 10 Years-Old Subjects Who Reported Solicited Local and Systemic Adverse Events After Any VaccinationLoss of Appetite(N=177,166)27 Subjects
2 Through 5 Years (2 Vac)Numbers of 6 to 10 Years-Old Subjects Who Reported Solicited Local and Systemic Adverse Events After Any VaccinationNausea(N=177,165)29 Subjects
2 Through 5 Years (2 Vac)Numbers of 6 to 10 Years-Old Subjects Who Reported Solicited Local and Systemic Adverse Events After Any VaccinationFatigue(N=177,166)44 Subjects
2 Through 5 Years (2 Vac)Numbers of 6 to 10 Years-Old Subjects Who Reported Solicited Local and Systemic Adverse Events After Any VaccinationMyalgia(N=177,165)63 Subjects
2 Through 5 Years (2 Vac)Numbers of 6 to 10 Years-Old Subjects Who Reported Solicited Local and Systemic Adverse Events After Any VaccinationArthralgia(N=177,165)20 Subjects
2 Through 5 Years (2 Vac)Numbers of 6 to 10 Years-Old Subjects Who Reported Solicited Local and Systemic Adverse Events After Any VaccinationHeadache(N=177,165)55 Subjects
2 Through 5 Years (2 Vac)Numbers of 6 to 10 Years-Old Subjects Who Reported Solicited Local and Systemic Adverse Events After Any VaccinationBody Temperature>=38.0(N=178,166)11 Subjects
2 Through 5 Years (1 Vac)Numbers of 6 to 10 Years-Old Subjects Who Reported Solicited Local and Systemic Adverse Events After Any VaccinationArthralgia(N=177,165)9 Subjects
2 Through 5 Years (1 Vac)Numbers of 6 to 10 Years-Old Subjects Who Reported Solicited Local and Systemic Adverse Events After Any VaccinationErythema(N=178,166)15 Subjects
2 Through 5 Years (1 Vac)Numbers of 6 to 10 Years-Old Subjects Who Reported Solicited Local and Systemic Adverse Events After Any VaccinationFatigue(N=177,166)25 Subjects
2 Through 5 Years (1 Vac)Numbers of 6 to 10 Years-Old Subjects Who Reported Solicited Local and Systemic Adverse Events After Any VaccinationInduration(N=178,166)15 Subjects
2 Through 5 Years (1 Vac)Numbers of 6 to 10 Years-Old Subjects Who Reported Solicited Local and Systemic Adverse Events After Any VaccinationBody Temperature>=38.0(N=178,166)9 Subjects
2 Through 5 Years (1 Vac)Numbers of 6 to 10 Years-Old Subjects Who Reported Solicited Local and Systemic Adverse Events After Any VaccinationPain(N=178,166)78 Subjects
2 Through 5 Years (1 Vac)Numbers of 6 to 10 Years-Old Subjects Who Reported Solicited Local and Systemic Adverse Events After Any VaccinationMyalgia(N=177,165)43 Subjects
2 Through 5 Years (1 Vac)Numbers of 6 to 10 Years-Old Subjects Who Reported Solicited Local and Systemic Adverse Events After Any VaccinationLoss of Appetite(N=177,166)14 Subjects
2 Through 5 Years (1 Vac)Numbers of 6 to 10 Years-Old Subjects Who Reported Solicited Local and Systemic Adverse Events After Any VaccinationHeadache(N=177,165)28 Subjects
2 Through 5 Years (1 Vac)Numbers of 6 to 10 Years-Old Subjects Who Reported Solicited Local and Systemic Adverse Events After Any VaccinationNausea(N=177,165)21 Subjects
Comparison: The safety of two vaccine groups was compared by calculating risk ratio of the proportions of subjects who experienced erythema in the two doses versus in the one dose of MenACWY-CRM95% CI: [0.77, 2.65]
Comparison: The safety of two vaccine groups was compared by calculating risk ratio of the proportions of subjects who experienced induration in the two doses versus in the one dose of MenACWY-CRM95% CI: [0.81, 2.74]
Comparison: The safety of two vaccine groups was compared by calculating risk ratio of the proportions of subjects who experienced pain in the two doses versus in the one dose of MenACWY-CRM95% CI: [1.04, 1.55]
Comparison: The safety of two vaccine groups was compared by calculating risk ratio of the proportions of subjects who experienced loss of appetite in the two doses versus in the one dose of MenACWY-CRM95% CI: [0.98, 3.33]
Comparison: The safety of two vaccine groups was compared by calculating risk ratio of the proportions of subjects who experienced nausea in the two doses versus in the one dose of MenACWY-CRM95% CI: [0.77, 2.17]
Comparison: The safety of two vaccine groups was compared by calculating risk ratio of the proportions of subjects who experienced fatigue in the two doses versus in the one dose of MenACWY-CRM95% CI: [1.06, 2.57]
Comparison: The safety of two vaccine groups was compared by calculating risk ratio of the proportions of subjects who experienced myalgia in the two doses versus in the one dose of MenACWY-CRM95% CI: [0.99, 1.89]
Comparison: The safety of two vaccine groups was compared by calculating risk ratio of the proportions of subjects who experienced arthralgia in the two doses versus in the one dose of MenACWY-CRM95% CI: [0.97, 4.42]
Comparison: The safety of two vaccine groups was compared by calculating risk ratio of the proportions of subjects who experienced headache in the two doses versus in the one dose of MenACWY-CRM95% CI: [1.22, 2.74]
Comparison: The safety of two vaccine groups was compared by calculating risk ratio of the proportions of subjects who experienced fever (≥38 °C) in the two doses versus in the one dose of MenACWY-CRM95% CI: [0.48, 2.68]
Secondary

Percentage of Subjects With hSBA Titer ≥1:8, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Month After One or Two Vaccination(s) of MenACWY-CRM

Immunogenicity was measured as the percentage of subjects who achieved hSBA titer ≥1:8 and associated 95% CI, at one month after one vaccination or two vaccinations of MenACWY-CRM.

Time frame: One Month After Last Vaccination (day 86)

Population: Analysis was done on the primary PP dataset.

ArmMeasureGroupValue (NUMBER)
2 Through 5 Years (2 Vac)Percentage of Subjects With hSBA Titer ≥1:8, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Month After One or Two Vaccination(s) of MenACWY-CRMMenA(N=135,143,152,142)95 percentage of subjects
2 Through 5 Years (2 Vac)Percentage of Subjects With hSBA Titer ≥1:8, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Month After One or Two Vaccination(s) of MenACWY-CRMMenC(N=131,140,149,142)98 percentage of subjects
2 Through 5 Years (2 Vac)Percentage of Subjects With hSBA Titer ≥1:8, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Month After One or Two Vaccination(s) of MenACWY-CRMMenW(N=128,135,148,138)99 percentage of subjects
2 Through 5 Years (2 Vac)Percentage of Subjects With hSBA Titer ≥1:8, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Month After One or Two Vaccination(s) of MenACWY-CRMMenY(N=128,133,148,142)96 percentage of subjects
2 Through 5 Years (1 Vac)Percentage of Subjects With hSBA Titer ≥1:8, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Month After One or Two Vaccination(s) of MenACWY-CRMMenC(N=131,140,149,142)76 percentage of subjects
2 Through 5 Years (1 Vac)Percentage of Subjects With hSBA Titer ≥1:8, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Month After One or Two Vaccination(s) of MenACWY-CRMMenW(N=128,135,148,138)92 percentage of subjects
2 Through 5 Years (1 Vac)Percentage of Subjects With hSBA Titer ≥1:8, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Month After One or Two Vaccination(s) of MenACWY-CRMMenY(N=128,133,148,142)69 percentage of subjects
2 Through 5 Years (1 Vac)Percentage of Subjects With hSBA Titer ≥1:8, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Month After One or Two Vaccination(s) of MenACWY-CRMMenA(N=135,143,152,142)76 percentage of subjects
6 Through 10 Years (2 Vac)Percentage of Subjects With hSBA Titer ≥1:8, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Month After One or Two Vaccination(s) of MenACWY-CRMMenW(N=128,135,148,138)99 percentage of subjects
6 Through 10 Years (2 Vac)Percentage of Subjects With hSBA Titer ≥1:8, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Month After One or Two Vaccination(s) of MenACWY-CRMMenC(N=131,140,149,142)99 percentage of subjects
6 Through 10 Years (2 Vac)Percentage of Subjects With hSBA Titer ≥1:8, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Month After One or Two Vaccination(s) of MenACWY-CRMMenY(N=128,133,148,142)96 percentage of subjects
6 Through 10 Years (2 Vac)Percentage of Subjects With hSBA Titer ≥1:8, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Month After One or Two Vaccination(s) of MenACWY-CRMMenA(N=135,143,152,142)91 percentage of subjects
6 Through 10 Years (1 Vac)Percentage of Subjects With hSBA Titer ≥1:8, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Month After One or Two Vaccination(s) of MenACWY-CRMMenY(N=128,133,148,142)73 percentage of subjects
6 Through 10 Years (1 Vac)Percentage of Subjects With hSBA Titer ≥1:8, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Month After One or Two Vaccination(s) of MenACWY-CRMMenC(N=131,140,149,142)89 percentage of subjects
6 Through 10 Years (1 Vac)Percentage of Subjects With hSBA Titer ≥1:8, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Month After One or Two Vaccination(s) of MenACWY-CRMMenA(N=135,143,152,142)80 percentage of subjects
6 Through 10 Years (1 Vac)Percentage of Subjects With hSBA Titer ≥1:8, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Month After One or Two Vaccination(s) of MenACWY-CRMMenW(N=128,135,148,138)96 percentage of subjects
Secondary

Percentage of Subjects With hSBA Titer ≥1:8, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Year After One or Two Vaccination(s) of MenACWY-CRM

Immunogenicity was measured as the percentage of subjects with hSBA titer ≥1:8 and associated 95% CI at one year after one vaccination or two vaccinations of MenACWY-CRM.

Time frame: One year after one vaccination or two vaccinations (day 422).

Population: Analysis was done on the persistence PP dataset

ArmMeasureGroupValue (NUMBER)
2 Through 5 Years (2 Vac)Percentage of Subjects With hSBA Titer ≥1:8, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Year After One or Two Vaccination(s) of MenACWY-CRMMenA(N=122,131,142,130)30 percentages of subjects
2 Through 5 Years (2 Vac)Percentage of Subjects With hSBA Titer ≥1:8, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Year After One or Two Vaccination(s) of MenACWY-CRMMenC(N=123,128,141,130)61 percentages of subjects
2 Through 5 Years (2 Vac)Percentage of Subjects With hSBA Titer ≥1:8, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Year After One or Two Vaccination(s) of MenACWY-CRMMenW(N=121,127,139,130)92 percentages of subjects
2 Through 5 Years (2 Vac)Percentage of Subjects With hSBA Titer ≥1:8, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Year After One or Two Vaccination(s) of MenACWY-CRMMenY(N=121,122,140,130)67 percentages of subjects
2 Through 5 Years (1 Vac)Percentage of Subjects With hSBA Titer ≥1:8, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Year After One or Two Vaccination(s) of MenACWY-CRMMenC(N=123,128,141,130)41 percentages of subjects
2 Through 5 Years (1 Vac)Percentage of Subjects With hSBA Titer ≥1:8, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Year After One or Two Vaccination(s) of MenACWY-CRMMenW(N=121,127,139,130)91 percentages of subjects
2 Through 5 Years (1 Vac)Percentage of Subjects With hSBA Titer ≥1:8, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Year After One or Two Vaccination(s) of MenACWY-CRMMenY(N=121,122,140,130)57 percentages of subjects
2 Through 5 Years (1 Vac)Percentage of Subjects With hSBA Titer ≥1:8, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Year After One or Two Vaccination(s) of MenACWY-CRMMenA(N=122,131,142,130)11 percentages of subjects
6 Through 10 Years (2 Vac)Percentage of Subjects With hSBA Titer ≥1:8, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Year After One or Two Vaccination(s) of MenACWY-CRMMenW(N=121,127,139,130)94 percentages of subjects
6 Through 10 Years (2 Vac)Percentage of Subjects With hSBA Titer ≥1:8, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Year After One or Two Vaccination(s) of MenACWY-CRMMenC(N=123,128,141,130)81 percentages of subjects
6 Through 10 Years (2 Vac)Percentage of Subjects With hSBA Titer ≥1:8, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Year After One or Two Vaccination(s) of MenACWY-CRMMenY(N=121,122,140,130)75 percentages of subjects
6 Through 10 Years (2 Vac)Percentage of Subjects With hSBA Titer ≥1:8, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Year After One or Two Vaccination(s) of MenACWY-CRMMenA(N=122,131,142,130)30 percentages of subjects
6 Through 10 Years (1 Vac)Percentage of Subjects With hSBA Titer ≥1:8, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Year After One or Two Vaccination(s) of MenACWY-CRMMenY(N=121,122,140,130)65 percentages of subjects
6 Through 10 Years (1 Vac)Percentage of Subjects With hSBA Titer ≥1:8, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Year After One or Two Vaccination(s) of MenACWY-CRMMenC(N=123,128,141,130)55 percentages of subjects
6 Through 10 Years (1 Vac)Percentage of Subjects With hSBA Titer ≥1:8, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Year After One or Two Vaccination(s) of MenACWY-CRMMenA(N=122,131,142,130)20 percentages of subjects
6 Through 10 Years (1 Vac)Percentage of Subjects With hSBA Titer ≥1:8, Directed Against N. Meningitidis Serogroups A, C, W and Y At One Year After One or Two Vaccination(s) of MenACWY-CRMMenW(N=121,127,139,130)90 percentages of subjects

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026