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MenQuadfi

Phase 3

Healthy Volunteers (Meningococcal Infection) | Monoclonal antibody | Other |Sanofi|Last Updated: Sep 9, 2026

Target and mechanism

ModalityMonoclonal antibody

Also known as MenACYW conjugate vaccine, Meningococcal Polysaccharide Tetanus Toxoid Conjugate

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindACTIVE_CONTROLLED
Total Trials4
Total Enrollment6,737

FDA Designations

No designations recorded

Clinical trial landscape

MenQuadfi · 25 trials · 11 indications

Phase 3 23Phase 2 2
NCT07710872Immunogenicity and Safety Study of an Investigational Quadrivalent Meningococcal Conjugate Vaccine Administered in Healthy Infants and Toddlers in ChinaMeningococcal Infection
RECRUITING4,568 Analytics
NCT07135986Immunogenicity and Safety Study of an Investigational Quadrivalent Meningococcal Conjugate Vaccine Administered in Healthy Children and Adolescents in ChinaMeningococcal Infection
ACTIVE NOT_RECRUITING1,602 Analytics
NCT06284915Study on Immunogenicity and Safety of a Meningococcal ACYW Conjugate Vaccine in Healthy Infants and ToddlersMeningococcal Immunisation
COMPLETED840 Analytics
NCT06228586Study on a MenACYW Conjugate Vaccine Administered as a Single Dose in Participants Aged 12 Months and Older in VietnamMeningococcal Infection
COMPLETED447 Analytics
NCT05794230Study of a Quadrivalent Meningococcal Conjugate Vaccine (MenACYW Conjugate Vaccine) Given With Routine Pediatric Vaccines in Healthy Infants and Toddlers in India and the Republic of South AfricaMeningococcal Immunisation
COMPLETED1,528 Analytics
NCT04936685Study on an Investigational Quadrivalent Meningococcal Conjugate Vaccine (MenACYW Conjugate Vaccine) Administered as a 5- and/or 10-year Booster Doses in Children and Adolescents Vaccinated 5 or 10 Years Earlier as ToddlersMeningococcal Immunisation
ACTIVE NOT_RECRUITING209 Analytics
NCT04490018Study on a Quadrivalent Meningococcal Conjugate Vaccine (MenACYW Conjugate Vaccine) Compared to a Meningococcal Reference Vaccine, and When Given Alone or With Two Other Vaccines in Healthy AdolescentsMeningococcal Immunisation
COMPLETED463 Analytics
NCT04368429Study of a Quadrivalent Meningococcal Conjugate Vaccine as a Single Dose Compared With a Single Dose of a Meningococcal Reference Vaccine in Children, Adolescents, and Adults 2 to 55 Years of AgeMeningococcal Immunisation (Healthy Volunteers)
COMPLETED360 Analytics
NCT04143061Immunogenicity and Safety of an Investigational Quadrivalent Meningococcal Conjugate Vaccine in Healthy Adults, Adolescents, Children, and Toddlers in India and Healthy Adolescents and Children in the Republic of South AfricaMeningococcal Immunization
COMPLETED1,328 Analytics
NCT04142242Study to Assess the Safety and Immunogenicity of a Single Dose of a Quadrivalent Meningococcal (MenACYW) Conjugate Vaccine in Older Adults Who Received a Primary Vaccination (3 or More Years Earlier) in Study MET49Meningococcal Infection (Healthy Volunteers)
COMPLETED471 Analytics
PHASE3RECRUITING
Immunogenicity and Safety Study of an Investigational Quadrivalent Meningococcal Conjugate Vaccine Administered in Healthy Infants and Toddlers in China
Meningococcal InfectionUnlock trial analytics
PHASE3ACTIVE NOT_RECRUITING
Immunogenicity and Safety Study of an Investigational Quadrivalent Meningococcal Conjugate Vaccine Administered in Healthy Children and Adolescents in China
Meningococcal InfectionUnlock trial analytics
PHASE3COMPLETED
Study on Immunogenicity and Safety of a Meningococcal ACYW Conjugate Vaccine in Healthy Infants and Toddlers
Meningococcal ImmunisationUnlock trial analytics
PHASE3COMPLETED
Study on a MenACYW Conjugate Vaccine Administered as a Single Dose in Participants Aged 12 Months and Older in Vietnam
Meningococcal InfectionUnlock trial analytics
PHASE3COMPLETED
Study of a Quadrivalent Meningococcal Conjugate Vaccine (MenACYW Conjugate Vaccine) Given With Routine Pediatric Vaccines in Healthy Infants and Toddlers in India and the Republic of South Africa
Meningococcal ImmunisationUnlock trial analytics
PHASE3ACTIVE NOT_RECRUITING
Study on an Investigational Quadrivalent Meningococcal Conjugate Vaccine (MenACYW Conjugate Vaccine) Administered as a 5- and/or 10-year Booster Doses in Children and Adolescents Vaccinated 5 or 10 Years Earlier as Toddlers
Meningococcal ImmunisationUnlock trial analytics
PHASE3COMPLETED
Study on a Quadrivalent Meningococcal Conjugate Vaccine (MenACYW Conjugate Vaccine) Compared to a Meningococcal Reference Vaccine, and When Given Alone or With Two Other Vaccines in Healthy Adolescents
Meningococcal ImmunisationUnlock trial analytics
PHASE3COMPLETED
Study of a Quadrivalent Meningococcal Conjugate Vaccine as a Single Dose Compared With a Single Dose of a Meningococcal Reference Vaccine in Children, Adolescents, and Adults 2 to 55 Years of Age
Meningococcal Immunisation (Healthy Volunteers)Unlock trial analytics
PHASE3COMPLETED
Immunogenicity and Safety of an Investigational Quadrivalent Meningococcal Conjugate Vaccine in Healthy Adults, Adolescents, Children, and Toddlers in India and Healthy Adolescents and Children in the Republic of South Africa
Meningococcal ImmunizationUnlock trial analytics
PHASE3COMPLETED
Study to Assess the Safety and Immunogenicity of a Single Dose of a Quadrivalent Meningococcal (MenACYW) Conjugate Vaccine in Older Adults Who Received a Primary Vaccination (3 or More Years Earlier) in Study MET49
Meningococcal Infection (Healthy Volunteers)Unlock trial analytics

Study Endpoints

Primary Endpoints

Participants 12 through 23 MoA (Cohort I): Vaccine seroresponse to meningococcal serogroups A, C, Y, and W
30 days post 2nd vaccination (up to Day 121)

30 days post-2nd vaccination rSBA titer ≥1:8 for participants with pre-vaccination rSBA titer \<1:8, or At least 4-fold increase in rSBA titer from pre- to 30 days post-2nd vaccination for participants with pre-vaccination rSBA titer ≥1:8

Participants 12 through 23 MoA (Cohort I): Antibody titers (in terms of GMTs) against meningococcal serogroups A, C, Y, and W measured by rSBA
30 days post 2nd vaccination (up to Day 121)

30 days (+10 days) post-2nd vaccination with MenACYW conjugate vaccine or MenACYW135, CanSino conjugated vaccine

Participants 6 through 11 MoA (Cohort II): Vaccine seroresponse to meningococcal serogroups A, C, Y, and W
30 days post 2nd vaccination (up to Day 121)

30 days post-2nd vaccination rSBA titer ≥1:8 for participants with pre-vaccination rSBA titer \<1:8, or At least 4-fold increase in rSBA titer from pre- to 30 days post-2nd vaccination for participants with pre-vaccination rSBA titer ≥1:8

Participants 6 through 11 MoA (Cohort II): Antibody titers (in terms of GMTs) against meningococcal serogroups A, C, Y, and W, measured by rSBA
30 days post 2nd vaccination (up to Day 121)

30 days (+10 days) post-2nd vaccination of the primary series with MenACYW conjugate vaccine or MenACYW135, CanSino conjugated vaccine

Participants 3 through 5 MoA (Cohort III -Groups 5 and 6): Vaccine seroresponse to meningococcal serogroups A, C, Y, and W
Day 91

30 days post-3rd vaccination rSBA titer ≥1:8 for participants with pre-vaccination rSBA titer \<1:8, or At least 4-fold increase in rSBA titer from pre- to 30 days post-3rd vaccination for participants with pre-vaccination rSBA titer ≥1:8

Participants 3 through 5 MoA (Cohort III -Groups 5 and 6): Antibody titers (in terms of GMTs) against meningococcal serogroups A, C, Y, and W, measured by rSBA
Day 91

30 days (+10 days) post-3rd vaccination of the primary series with MenACYW conjugate vaccine or MenACYW135, CanSino conjugate vaccine

Participants 2 through 5 MoA (Cohort III - Groups 7 and 6): Vaccine seroresponse to meningococcal serogroups A, C, Y, and W
Day 151

30 days post-3rd vaccination rSBA titer ≥1:8 for participants with pre-vaccination rSBA titer \<1:8, or At least 4-fold increase in rSBA titer from pre- to 30 days post-3rd vaccination for participants with pre-vaccination rSBA titer ≥1:8

Participants 2 through 5 MoA (Cohort III - Groups 7 and 6): Antibody titers (in terms of GMTs) against meningococcal serogroups A, C, Y, and W, measured by rSBA
Day 151

30 days (+10 days) post-3rd vaccination of the primary series with MenACYW conjugate vaccine (Group 7) or MenACYW135, CanSino conjugate vaccine (Group 6)

Participants 7 through 17 years of age (Cohort I): Vaccine seroresponse to meningococcal serogroups A, C, Y, and W
Day 01 (pre-vaccination) and Day 31 (post- vaccination)

30 days postvaccination rSBA titer ≥1:8 for participants with prevaccination rSBA titer \<1:8, or At least 4-fold increase in rSBA titer from pre- to 30 days postvaccination for participants with pre vaccination rSBA titer ≥1:8

Participants 7 through 17 years of age (Cohort I): Geometric mean titers (GMTs) of antibodies against meningococcal serogroups A, C, Y, and W
Day 31 (post- vaccination)

Antibodies titers are expressed as geometric mean titers

Participants 7 through 17 years of age (Cohort I): Vaccine seroresponse to meningococcal serogroups W and Y will be assessed in participants receiving MenACYW conjugate vaccine
Day 01 (pre-vaccination) and Day 31 (post- vaccination)

30 days postvaccination rSBA titer ≥1:8 for participants with prevaccination rSBA titer \<1:8, or At least 4-fold increase in rSBA titer from pre- to 30 days post-vaccination for participants with pre vaccination rSBA titer ≥1:8

Participants 2 through 6 years of age (Cohort II): Vaccine seroresponse to meningococcal serogroups A and C
Day 01 (pre-vaccination) and Day 31 (post- vaccination)

30 days postvaccination rSBA titer ≥1:8 for participants with prevaccination rSBA titer \<1:8, or At least 4-fold increase in rSBA titer from pre- to 30 days postvaccination for participants with pre vaccination rSBA titer ≥1:8

Participants 2 through 6 years of age (Cohort II): Geometric mean titers (GMTs) of antibodies against meningococcal serogroups A and C
Day 01 (pre-vaccination) and Day 31 (post- vaccination)

Antibody titers are expressed as geometric mean titers

Participants 2 through 6 years of age (Cohort II): Vaccine seroresponse to meningococcal serogroups W and Y in participants receiving MenACYW conjugate vaccine
Day 01 (pre-vaccination) and Day 31 (post- vaccination)

30 days post-vaccination rSBA titer ≥1:8 for participants with pre-vaccination rSBA titer \<1:8, or At least 4-fold increase in rSBA titer from pre- to 30◦days post-vaccination for participants with pre vaccination rSBA titer ≥1:8

Geometric mean titers (GMTs) of Antibodies against meningococcal serogroups A, C, W and Y
30 days after dose 2 (booster dose) (+14 days)

Geometric mean titers after a 2-dose serie measured by serum bactericidal assays using human complement (hSBA)

Vaccine Seroresponse to meningococcal serogroups A, C, W and Y assessed by hSBA
30 days after dose 2 (booster dose) (+14 days)

Vaccine seroresponse after a 2-dose serie measured by hSBA

Geometric Mean Titers (GMTs) of Antibodies Against Meningococcal Serogroups A, C, Y, and W
Day 1 (pre-vaccination) and Day 31 (30 days post-vaccination on Day 1)

Functional meningococcal antibody activity against serogroups A, C, Y, and W was measured in a serum bactericidal assay utilizing the human complement (hSBA).

Percentage of Participants With Serum Bactericidal Assay Using Human Complement Titers >=4-Fold Rise From Pre-Vaccination to Post-Vaccination
Day 1 (pre-vaccination) and Day 31 (30 days post-vaccination on Day 1)

Functional meningococcal antibody activity against serogroups A, C, Y, and W was measured by hSBA. Percentages are rounded off to the tenth decimal place.

Percentage of Participants With Serum Bactericidal Assay Using Human Complement Titers >=1:4 and >=1:8
Day 1 (pre-vaccination) and Day 31 (30 days post-vaccination on Day 1)

Functional meningococcal antibody activity against serogroups A, C, Y, and W was measured by hSBA. Percentages are rounded off to the tenth decimal place.

Percentage of Participants With Serum Bactericidal Assay Using Human Complement Vaccine Seroresponse for Serogroups A, C, Y, and W
Day 1 (pre-vaccination) and Day 31 (30 days post-vaccination on Day 1)

Functional meningococcal antibody activity against serogroups A, C, Y, and W was measured by hSBA. hSBA vaccine seroresponse was defined as follows: for a participant with a pre-vaccination titer \<1:8, the post-vaccination titer must be \>=1:16, and for a participant with a pre-vaccination titer \>=1:8, the post-vaccination titer must be at least 4-fold greater than the pre-vaccination titer. Percentages are rounded off to the tenth decimal place.

Number of Participants With Immediate Unsolicited Systemic Adverse Events (AEs)
Up to 30 minutes post-vaccination on Day 1

An AE was any untoward medical occurrence in a clinical study participant, temporally associated with the use of study vaccine, whether or not considered related to the study vaccine. An unsolicited AE was an observed AE that did not fulfill the conditions of solicited reactions, i.e., pre-listed in the case report form (CRF) in terms of diagnosis and onset window post-vaccination. Immediate events were recorded to capture medically relevant unsolicited systemic AEs (including those related to the study vaccine administered) which occurred within the first 30 minutes after vaccination.

Number of Participants With Solicited Injection Site Reactions and Systemic Reactions
From the study vaccine administration (Day 1) up to 7 days post-vaccination, up to Day 8

A solicited reaction was an "expected" adverse reaction (AR) (sign or symptom) observed and reported under the conditions (nature and onset) pre-listed in the protocol and CRF. An injection site reaction was an AR at and around the injection site considered to be related to the study vaccine administered and were commonly inflammatory reactions. Systemic ARs were all ARs that were not injection site reactions and included systemic manifestations such as headache, fever, as well as localized or topical manifestations.

Number of Participants With Unsolicited Non-Serious Adverse Events
From the study vaccine administration (Day 1) up to 30 days post-vaccination (Day 31)

An AE was any untoward medical occurrence in a clinical study participant, temporally associated with the use of study vaccine, whether or not considered related to the study vaccine. An unsolicited AE was an observed AE that did not fulfill the conditions of solicited reactions, i.e., pre-listed in the CRF in terms of diagnosis and onset window post-vaccination.

Number of Participants With Serious Adverse Events (SAEs) and Adverse Events of Special Interest (AESIs)
From the study vaccine administration (Day 1) up to 30 days post-vaccination (Day 31)

An AE was any untoward medical occurrence in a clinical study participant, temporally associated with the use of study vaccine, whether or not considered related to the study vaccine. An SAE was any AE that, at any dose, resulted in death, was life-threatening, required inpatient hospitalization or prolongation of existing hospitalization, resulted in persistent or significant disability/incapacity, was a congenital anomaly/birth defect or was other medically important event. An AESI (serious or non-serious) was one of scientific and medical concern specific to the Sponsor's study vaccine or program, for which ongoing monitoring and rapid communication by the investigator to the Sponsor was appropriate.

Percentage of participants with anti-meningococcal serogroups A, C, Y, W antibody titers above predefined thresholds after 2 doses of MenACYW conjugate vaccine compared to 2 doses of Menactra® vaccine in infants and toddlers 6 months to 16 months of age
30 days after the second vaccination

Antibody (Ab) titers against meningococcal serogroups A, C, Y, and W will be measured in infants and toddlers 6 months to 16 months of age (\[Group 1 + Group 3\] versus \[Group 2 + Group 4\]) The following threshold values will be considered: ≥ 1:8

Percentage of participants with anti-meningococcal serogroups A, C, Y, W Ab titers above predefined thresholds after 3 doses of MenACYW conjugate vaccine in infants and toddlers 6 weeks to 15 months of age
30 days after the booster vaccination

Ab titers against meningococcal serogroups A, C, Y, and W will be measured in infants and toddlers 6 months to 15 months of age (Group 5 + Group 7) The following threshold values will be considered: ≥ 1:8

Group 1: Percentage of Participants With Sufficiency of Serum Bactericidal Assay Using Human Complement (hSBA) Vaccine Seroresponse at 30 Days Post Booster Dose
Baseline (Day 1) and 30 days after the MenACYW conjugate vaccine 5-year booster dose

Functional meningococcal antibody activity against serogroups A, C, Y, and W were measured in a serum bactericidal assay utilizing the hSBA. hSBA vaccine seroresponse for serogroups A, C, W, and Y is defined as: percentage of participants with a pre-vaccination titer \< 1:8, who had achieved a post-vaccination titer \>= 1:16 or participants with a pre-vaccination titer \>= 1:8, who had achieved a post-vaccination titer at least 4-fold greater than the pre-vaccination titer. The seroresponse sufficiency was demonstrated if the lower limit of 1-sided 97.5% confidence interval (CI) is \> 75%.

Percentage of Participants With Antibody Titers >=1:8 Against Meningococcal Serogroups A, C, W, and Y Measured by hSBA Following Vaccination With MenACYW Conjugate Vaccine or Nimenrix® Vaccine (Non-inferiority Analysis): Groups 1 and 2
Day 31 (post-vaccination)

Antibody titers against meningococcal serogroups A, C, W, and Y were measured by serum bactericidal assay using human complement (hSBA). Non-inferiority data analysis for this outcome measure was planned to be conducted only for Groups 1 and 2, not for Group 3. Group 3 data is reported separately.

Percentage of Participants With Vaccine Seroresponse For Meningococcal Serogroup A, C, Y And W Following Vaccination With MenACYW Conjugate and Menactra® Vaccine: Non-Inferiority Analysis
Day 30 (post-vaccination)

Antibody titers against meningococcal serogroups A, C, Y, and W were measured by serum bactericidal assay using human complement (hSBA). The hSBA vaccine seroresponse was defined as a post-vaccination hSBA titer greater than or equal to (\>=) 1:16 for participants with pre-vaccination hSBA titer less than (\<) 1:8, or a \>= 4-fold increase in hSBA titer from pre-vaccination to post-vaccination for participants with pre-vaccination hSBA titer \>= 1:8.

Group 5 + 7 and Group 6 + 8: Percentage of Participants Who Achieved Antibody Titers ≥1:8 Against Meningococcal Serogroups A, C, Y, and W
Day 30 (30 days post-vaccination on Day 0)

Functional meningococcal antibody activity against serogroups A, C, Y, and W were measured by serum bactericidal assay using human complement (hSBA). Percentages are rounded off to the tenth decimal place. As pre-specified in protocol, the endpoint was assessed in children and adolescents aged 2 to 17 years in India and RSA as combined groups: Group 5 + Group 7 and Group 6 + Group 8 as they received the same dose of MenACYW conjugate vaccine and Menactra® respectively.

Stage I: Percentage of Participants With Seroresponse for Meningococcal Serogroups A, C, W & Y Measured by Serum Bactericidal Assay Using Human Complement (hSBA) After Vaccination With MenACYW Conjugate Vaccine in Study MEQ00066: Group 1 (Menomune-primed)
Day 30 (post-vaccination) in study MEQ00066

Antibody titers against meningococcal serogroups A, C, W, and Y were measured by hSBA. The hSBA vaccine seroresponse was defined as a post-vaccination hSBA titer greater than or equal to (\>=) 1:16 for participants with pre-vaccination hSBA titer less than (\<) 1:8, or a \>= 4-fold increase in hSBA titer from pre-vaccination to post-vaccination for participants with pre-vaccination hSBA titer \>= 1:8.

Percentage of Participants With Antibody Titers >=1:8 Against Meningococcal Serogroup C Measured by Serum Bactericidal Assay Using Human Complement (hSBA) Following Vaccination With MenACYW Conjugate Vaccine or Nimenrix® (Non-inferiority Analysis)
Day 30 (post-vaccination)

Antibody titers against Meningococcal Serogroup C were measured by hSBA.

Geometric Mean Titers (GMTs) of Antibodies Against Meningococcal Serogroup C Measured by hSBA Following Vaccination With MenACYW Conjugate Vaccine or Nimenrix® (Non-inferiority Analysis)
Day 30 (post-vaccination)

GMT titers against Meningococcal Serogroup C were measured by hSBA. Titers were expressed in terms of 1/dilution.

GMTs of Antibodies Against Meningococcal Serogroup C Measured by hSBA Following Vaccination With MenACYW Conjugate Vaccine or Nimenrix® (Superiority Analysis)
Day 30 (post-vaccination)

GMT titers against Meningococcal Serogroup C were measured by hSBA. Titers were expressed in terms of 1/dilution.

Percentage of Participants With Antibody Titers >=1:8 Against Meningococcal Serogroup C Measured by hSBA Following Vaccination With MenACYW Conjugate Vaccine or Nimenrix® (Superiority Analysis)
Day 30 (post-vaccination)

Antibody titers against Meningococcal Serogroup C were measured by hSBA.

Percentage of Participants With Antibody Titers >=1:8 Against Meningococcal Serogroup C Measured by Serum Bactericidal Assay Using Baby Rabbit Complement (rSBA) Following Vaccination With MenACYW Conjugate Vaccine or NeisVac-C® (Non-inferiority Analysis)
Day 30 (post-vaccination)

Antibody titers against Meningococcal Serogroup C were measured by rSBA.

GMTs of Antibodies Against Meningococcal Serogroup C Measured by rSBA Following Vaccination With MenACYW Conjugate Vaccine or NeisVac-C® (Non-inferiority Analysis)
Day 30 (post-vaccination)

GMT titers against Meningococcal Serogroup C were measured by rSBA. Titers were expressed in terms of 1/dilution.

GMTs of Antibodies Against Meningococcal Serogroup C Measured by rSBA Following Vaccination With MenACYW Conjugate Vaccine or NeisVac-C® (Superiority Analysis)
Day 30 (post-vaccination)

GMT titers against Meningococcal Serogroup C were measured by rSBA. Titers were expressed in terms of 1/dilution.

Groups 1 and 2: Geometric Mean Titers (GMTs) Against Meningococcal Serogroups A, C, W, and Y
At 30 days post Dose 3 [12 to 18 months of age (MoA)]

Functional meningococcal antibody activity against serogroups A, C, W, and Y were measured in a serum bactericidal assay utilizing the serum bactericidal assay using human complement (hSBA).

Percentage of Participants With Antibody Titers Greater Than or Equal to (>=) 1:8 Against Meningococcal Serogroups A, C, Y, and W Following Last Vaccination With MenACYW Conjugate or Menveo® Vaccine: Groups 1 and 2
30 days after the last vaccination at the age of 12 months (i.e., at the age of 13 months)

Antibody titers of Meningococcal Serogroups A, C, Y, and W were measured by serum bactericidal assay using human complement (hSBA) assay. Group 3 data were presented separately.

Percentage of Participants With Antibody Titers >=1:8 Against Meningococcal Serogroups A, C, Y, and W Following Last Vaccination With MenACYW Conjugate Vaccine: Group 3
30 days after the last vaccination at the age of 12 months (i.e., at the age of 13 months)

Antibody titers of Meningococcal Serogroups A, C, Y, and W were measured by hSBA assay.

Percentage of Participants With Antibody Titers Greater Than or Equal to (>=) 1:8 Against Meningococcal Serogroups A, C, Y, and W Measured by hSBA After Vaccination: Groups 1 and 2 - PPAS3
30 days post-vaccination at the age of 12 to 13 months (i.e., at the age of 13 to 14 months)

Antibody titers of Meningococcal Serogroups A, C, Y, and W were measured by serum bactericidal assay using human complement (hSBA) assay. Percentage of participants with antibody titers \>=1:8 for meningococcal serogroups A, C, Y, and W were reported in this outcome measure. Data for this outcome measure was not planned to be collected and analyzed for Group 3.

Number of Participants With Solicited Injection Site Reactions
Within 7 days post any vaccination

A solicited reaction was an "expected" adverse reaction (AR) (sign or symptom) observed and reported under the conditions (nature and onset) pre-listed in the protocol and CRB and considered as related to the product administered. Solicited injection site reactions included Injection site tenderness, Injection site erythema, and Injection site swelling and were planned to be collected and reported for each vaccine separately; and not planned to be collected for Rotavirus vaccine as the vaccine was administered orally, and no injection site reactions were expected to occur. Reported AEs for each arm were presented as pre-specified in protocol.

Number of Participants With Solicited Systemic Reactions
Within 7 days post-any vaccination

A solicited reaction was an "expected" AR (sign or symptom) observed and reported under the conditions (nature and onset) pre-listed in the protocol and CRB and considered as related to the product administered. Solicited systemic reactions included fever, vomiting, crying abnormal, drowsiness, appetite loss, and irritability. Reported AEs for each arm were presented as pre-specified in protocol.

Number of Participants With Unsolicited Adverse Events
Within 30 days post any vaccination

An AE was any untoward medical occurrence in a clinical investigation participant administered a medicinal product, and which does not necessarily have a causal relationship with this treatment. An unsolicited AE was an observed AE that does not fulfill the conditions prelisted in the CRB in terms of diagnosis and/or onset window post-vaccination. Unsolicited AEs includes both serious adverse events (SAEs) and non-serious unsolicited AEs. Reported AEs for each arm were presented as pre-specified in protocol.

Number of Participants With Serious Adverse Events (SAEs) and Adverse Event of Special Interest (AESIs)
From day of first vaccination (i.e., at the age of 2 months) up to 6 months after last vaccination (i.e., up to the age of 18 months)

A SAE was any untoward medical occurrence that at any dose resulted in death, was life-threatening, required inpatient hospitalization or prolongation of existing hospitalization, resulted in persistent or significant disability/incapacity, was a congenital anomaly/birth defect, or was an important medical event. An AESI (serious or non-serious) was defined as one of scientific and medical concern specific to the Sponsor's product or program, for which ongoing monitoring and rapid communication by the Investigator to the Sponsor was appropriate. Reported AEs for each arm were presented as pre-specified in protocol.

Number of Participants With Medically Attended Adverse Event (MAAEs)
From day of first vaccination (i.e., at the age of 2 months) up to 6 months after last vaccination (i.e., up to the age of 18 months)

A MAAE was defined as a new onset of a condition that prompts the participant or participant's parent/guardian to seek unplanned medical advice at a health care provider's office or Emergency Department. Reported AEs for each arm were presented as pre-specified in protocol.

Groups 1a and 2a: Percentage of Participants With Vaccine Seroresponse Measured by Serum Bactericidal Assay Using Human Complement (hSBA) at Day 30 Post 12-Month Vaccination
Day 30 post 12-month vaccination (Month 13)

Functional meningococcal antibody activity against serogroups A, C, Y, and W were measured in a serum bactericidal assay utilizing the hSBA. Vaccine seroresponse was defined as a post 4th dose (Day 30 after 12-month) hSBA titer \>=1:16 for participants with pre 1st dose (Day 0 before 2-month) hSBA titer less than (\<) 1:8, or at least a 4-fold increase in hSBA titer from pre-vaccination to post-vaccination for participants with pre-vaccination hSBA titer \>=1:8. Percentages are rounded off to the tenth decimal place.

Groups 1 and 2: Percentage of Participants Who Achieved Antibody Titers >=1:8 by hSBA at Day 30 Post 6-Month Vaccination
Day 30 post 6-month vaccination (Month 7)

Functional meningococcal antibody activity against serogroups A, C, Y, and W were measured in a serum bactericidal assay utilizing the hSBA. Percentages are rounded off to the tenth decimal place.

Antibody Titers Measured by Serum Bactericidal Assay Using Human Complement (hSBA) Against Meningococcal Serogroups A, C, Y, and W Before a Booster Dose of MenACYW Conjugate Vaccine in MET62
Day 0 (pre-vaccination)

Antibody titers against meningococcal serogroups A, C, Y, and W were measured by hSBA.

Antibody Titers Measured by hSBA Against Meningococcal Serogroups A, C, Y, and W After a Booster Dose of MenACYW Conjugate Vaccine in MET62
Day 30 (post-booster vaccination)

Antibody titers against meningococcal serogroups A, C, Y, and W were measured by hSBA.

Antibody Titers Measured by Serum Bactericidal Assay Using Baby Rabbit Complement (rSBA) Against Meningococcal Serogroups A, C, Y, and W Before a Booster Dose of MenACYW Conjugate Vaccine in MET62
Day 0 (pre-vaccination)

Antibody titers against meningococcal serogroups A, C, Y, and W were measured by rSBA.

Antibody Titers Measured by rSBA Against Meningococcal Serogroups A, C, Y, and W After a Booster Dose of MenACYW Conjugate Vaccine in MET62
Day 30 (post-booster vaccination)

Antibody titers against meningococcal serogroups A, C, Y, and W were measured by rSBA.

Antibody Titers Measured by hSBA Against Meningococcal Serogroups A, C, Y, and W After Priming Vaccination in MET54 and Booster Vaccination in MET62
Day 0 (pre-vaccination) and Day 30 (post-priming vaccination) in study MET54, and Day 0 (pre-vaccination) and Day 30 (post-booster vaccination) in study MET62

Antibody titers against meningococcal serogroups A, C, Y, and W were measured by hSBA.

Antibody Titers Measured by rSBA Against Meningococcal Serogroups A, C, Y, and W After Priming Vaccination in MET54 and Booster Vaccination in MET62
Day 0 (pre-vaccination) and Day 30 (post-priming vaccination) in study MET54, and Day 0 (pre-vaccination) and Day 30 (post-booster vaccination) in study MET62

Antibody titers against meningococcal serogroups A, C, Y, and W were measured by rSBA.

Antibody Concentrations Against Tetanus Toxoid Before a Booster Dose of MenACYW Conjugate Vaccine in MET62
Day 0 (pre-vaccination)

Anti-tetanus antibodies were measured by electrochemiluminescent (ECL) assay.

Antibody Concentrations Against Tetanus Toxoid After a Booster Dose of MenACYW Conjugate Vaccine in MET62
Day 30 (post-booster vaccination)

Anti-tetanus antibodies were measured by ECL assay.

Number of Participants With Immediate Adverse Event After Vaccination in MET62
Within 30 minutes after vaccination

Immediate events captured medically relevant unsolicited systemic adverse events (AEs) that occurred within the first 30 minutes after vaccination. An unsolicited AE was an observed AE that did not fulfill the conditions pre-listed in the case report book (CRB) in terms of diagnosis and/or onset window post-vaccination. Systemic AEs were all AEs that were not injection or administration site reactions.

Number of Participants With Solicited Injection Site Reactions and Systemic Reactions in MET62
Within 7 days after vaccination

A solicited reaction (SR) was an adverse reaction (AR) observed and reported under the conditions (nature and onset) pre-listed in the protocol and CRB. Solicited injection site reactions: pain, erythema, and swelling. Solicited systemic reactions: fever, headache, malaise and, myalgia.

Number of Participants With Unsolicited Adverse Event After Vaccination in MET62
Within 30 days after vaccination

An unsolicited AE was an observed AE that did not fulfill the conditions pre-listed in the CRB in terms of diagnosis and/or onset window post-vaccination.

Number of Participants With a Serious Adverse Event (SAE) After Vaccination in MET62
Within 30 days after vaccination

A SAE was any untoward medical occurrence that at any dose resulted in death, was life-threatening, required inpatient hospitalization or prolongation of existing hospitalization, resulted in persistent or significant disability/incapacity, was a congenital anomaly/birth defect, was an important medical event.

Percentage of Participants With Antibody Titers Greater Than or Equal to (>=) 1:8 Against Meningococcal Serogroups A, C, Y, and W in Toddlers Who Either Were Meningococcal Vaccine Naïve or Had Received Monovalent MenC Vaccination During Infancy
Day 30 (post-vaccination)

Antibody titers against Meningococcal Serogroups A, C, Y, and W were measured by serum bactericidal assay using human complement (hSBA). Data for this outcome measure were planned to be analyzed for the pooled population of MenACYW Conjugate vaccine and Nimenrix® reporting groups.

Percentage of Participants With Antibody Titers >=1:8 Against Meningococcal Serogroups A, C, Y, and W Following Vaccination With MenACYW Conjugate Vaccine or Nimenrix® in Meningococcal Vaccine Naïve Toddlers
Day 30 (post-vaccination)

Antibody titers against Meningococcal Serogroups A, C, Y, and W were measured by hSBA.

Percentage of Participants Achieving Seroresponse Measured by Serum Bactericidal Assay Using Human Complement (hSBA) Against Meningococcal Serogroups A, C, Y, and W Following Vaccination With Either MenACYW Conjugate Vaccine or MENVEO® Vaccine
Day 30 (post-vaccination)

Antibody titers against meningococcal serogroups A, C, Y, and W were measured by hSBA. The hSBA vaccine seroresponse against serogroups A, C, Y, and W was defined as post-vaccination hSBA titers greater than or equal to (\>=) 1:16 for participants with pre-vaccination hSBA titers less than (\<) 1:8 or at least a 4-fold increase in hSBA titers from pre- to post-vaccination for participants with pre-vaccination hSBA titers \>=1:8.

Geometric Mean Titers of Meningococcal Serogroups A, C, Y, and W Antibodies Following Injection With MenACYW Conjugate Vaccine Administered Alone or Concomitantly With Other Pediatric Vaccines: Groups 1, 2, 4, 5, 7, 8, 10, and 11
Day 0 and Day 30 post-vaccination

Antibody titers of Meningococcal Serogroups A, C, Y, and W were measured by serum bactericidal assay using human complement (hSBA) assay. Data for this outcome measure was planned to reported for the combined population of Groups 1 and 10, Groups 2 and 11.

Percentage of Participants With Antibody Titers >=1:4 and >=1:8 Against Meningococcal Serogroups A, C, Y, and W Following Injection With MenACYW Conjugate Vaccine Administered Alone or With Other Pediatric Vaccines: Groups 1, 2, 4, 5, 7, 8, 10, and 11
Day 0 and Day 30 post-vaccination

Antibody titers of Meningococcal Serogroups A, C, Y, and W were measured by hSBA assay. Data for this outcome measure was planned to be reported for the combined population of Groups 1 and 10, Groups 2 and 11.

Percentage of Participants With >=4-Fold Rise in Antibody Titers Against Meningococcal Serogroups A, C, Y, and W Following Injection With MenACYW Conjugate Vaccine Administered Alone or With Other Pediatric Vaccines: Groups 1, 2, 4, 5, 7, 8, 10, and 11
Day 0 up to Day 30 post-vaccination

Antibody titers of Meningococcal Serogroups A, C, Y, and W were measured by hSBA assay. Data for this outcome measure was planned to be reported for the combined population of Groups 1 and 10, Groups 2 and 11.

Percentage of Participants Achieving hSBA Vaccine Seroresponse for Meningococcal Serogroups A, C, Y, and W Following Injection With MenACYW Conjugate Vaccine Administered Alone or Concomitantly With Pediatric Vaccines: Groups 1, 2, 4, 5, 7, 8, 10, and 11
Day 30 post-vaccination

The hSBA vaccine seroresponse for serogroups A, C, Y, and W was defined as post-vaccination hSBA titers \>=1:16 for participants with pre-vaccination titers \<1:8 or at least a 4-fold increase in post-vaccination hSBA titers from pre- to post-vaccination, for participants with pre-vaccination titers \>=1:8. Data for this outcome measure was planned to be reported for the combined population of Groups 1 and 10, Groups 2 and 11.

Percentage of Participants With Vaccine Seroresponse for Meningococcal Serogroups A, C, Y, and W Following Vaccination With Either MenACYW Conjugate Vaccine or Menomune® Vaccine
Day 30 (Post-vaccination)

Vaccine seroresponse for serogroups A, C, Y, and W was measured by serum bactericidal assay using human complement (hSBA). It was defined as post-vaccination hSBA titers ≥1:16 for participants with pre-vaccination hSBA titers less than (\<) 1:8, or at least a 4-fold increase in hSBA titers from pre- to post-vaccination for participants with pre-vaccination hSBA titers ≥1:8.

Geometric Mean Titers (GMTs) of Meningococcal Serogroups A, C, Y, And W Antibodies Following Vaccination With 3 Lots of MenACYW Conjugate Vaccine
Day 30 (post-vaccination)

Antibody titers of Meningococcal Serogroups A, C, Y, and W were measured by serum bactericidal assay using human complement (hSBA). Data for this outcome measure were not planned to be collected and analyzed for the Menactra® reporting group.

Percentage of Participants Achieving hSBA Vaccine Seroresponse for Meningococcal Serogroups A, C, Y And W Following Vaccination With Either MenACYW Conjugate Vaccine or Menactra® Vaccine
Day 30 (post-vaccination)

Antibody titers against meningococcal serogroups A, C, Y, and W measured by hSBA. The hSBA vaccine seroresponse for serogroups A, C, Y, and W was defined as post-vaccination hSBA titers \>= 1:16 for participants with pre-vaccination hSBA titers \< 1:8 or at least a 4-fold increase in hSBA titers from pre- to post-vaccination for participants with pre-vaccination hSBA titers \>= 1:8.

Percentage of Participants With Seroresponse to Meningococcal Serogroups A, C, Y, and W Following Vaccination With Either MenACYW Conjugate Vaccine or Menactra® Vaccine
Day 30 (post-vaccination)

The serum bactericidal assay using human complement (hSBA) vaccine seroresponse for serogroups A, C, Y, and W was defined as post-vaccination hSBA titers \>= 1:16 for participants with pre-vaccination hSBA titers \< 1:8 or at least a 4-fold increase in hSBA titers from pre- to post-vaccination for participants with pre-vaccination hSBA titers \>= 1:8.

Number of Participants Reporting Solicited Injection-Site and Systemic Reaction Following Vaccination With Either MenACYW Conjugate Vaccine or NIMENRIX®
Day 0 up to Day 7 post-vaccination

A solicited reaction was defined as an adverse reaction (AR) observed and reported under the conditions (symptom and onset) prelisted (i.e., solicited) in the case report form (CRF) and considered as related to vaccination. Solicited injection site reactions: Tenderness, Erythema, and Swelling. Solicited systemic reactions: Fever, Vomiting, Crying abnormal, Drowsiness, Appetite lost, and Irritability. Grade 3 solicited injection site reactions: Tenderness: cries when injected limb was moved or the movement of the injected limb was reduced; Erythema and Swelling: greater than or equal to (≥) 50 millimeter (mm). Grade 3 solicited systemic reactions: Fever: greater than \[\>\] 39.5 degree Celsius (°C); Vomiting: ≥6 episodes per 24 hours or requiring parenteral hydration; crying abnormal: \>3 hours; Drowsiness: sleeping most of the time or difficult to wake up; Appetite lost: refuses ≥3 feeds or refuses most feeds; Irritability: inconsolable.

Percentage of Participants Achieving Vaccine Seroresponse Measured by Serum Bactericidal Assay Using Human Complement (hSBA) Against Meningococcal Serogroups A, C, Y, and W Following Vaccination With Either MenACYW Conjugate Vaccine or MENVEO® Vaccine
Day 30 (post-vaccination)

Antibody titers against meningococcal serogroups A, C, Y, and W measured by hSBA. The hSBA vaccine seroresponse for serogroups A, C, Y, and W was defined as post-vaccination hSBA titers greater than or equal to (\>=) 1:8 for participants with pre-vaccination hSBA titers less than (\<) 1:8 or at least a 4-fold increase in hSBA titers from pre- to post vaccination for participants with pre-vaccination hSBA titers \>= 1:8. Data for this outcome measure was not planned to be collected and analyzed for Group 4:Tdap+HPV.

Secondary Endpoints

Number of participants with immediate adverse events (AEs)
Within 30 minutes post-vaccination
Presence of solicited injection site reactions
for 8 days, including the day of each study vaccination.
Presence of solicited systemic reactions
for 8 days, including the day of each study vaccination.
Unlock Study Endpoints

Study Design & Arms

AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposePREVENTION

Treatment Arms

ArmTypeDescription
Cohort I: Group 1MenACYW 2-dose scheduleEXPERIMENTAL2 doses of MenACYW conjugate vaccine to participants aged 12 through 23 MoA
Cohort I: Group 2 MenACYW135, CanSino 2-dose scheduleACTIVE_COMPARATOR2 doses of MenACYW135, CanSino conjugate vaccine to participants aged 12 through 23 MoA
Cohort II: Group 3MenACYW 2-dose primary vaccination + 1-dose booster scheduleEXPERIMENTAL2-dose primary vaccination and 1-dose booster of MenACYW conjugate vaccine to participants aged 6 through 11 MoA
Cohort II: Group 4 MenACYW135, CanSino 2-dose scheduleACTIVE_COMPARATOR2-dose primary vaccination and 1-dose booster of MenACYW135, CanSino conjugate vaccine to participants aged 6 through 11 MoA
Cohort III: Group 5 MenACYW 3-dose primary vaccination + 1-dose booster scheduleEXPERIMENTAL3-dose primary vaccination and 1-dose booster of MenACYW conjugate vaccine to participants aged 3 through 5 MoA
Cohort III: Group 6 MenACYW135, CanSino 3-dose primary vaccination + 1-dose booster scheduleACTIVE_COMPARATOR3-dose primary vaccination and 1-dose booster of MenACYW135, CanSino conjugate vaccine to participants aged 3 through 5 MoA
Cohort III: Group 7 MenACYW 3-dose primary vaccination + 1-dose booster scheduleEXPERIMENTAL3-dose primary vaccination and 1-dose booster of MenACYW conjugate vaccine to participants aged 2 MoA
Group 1 MenACYW1-dose scheduleEXPERIMENTAL1 dose of MenACYW conjugate vaccine to participants aged 7 through 17 years of age
Group 2 MenACYW135 Ps 1-dose scheduleACTIVE_COMPARATOR1 dose of MenACYW135 polysaccharide vaccine to participants aged 7 through 17 years of age
Group 3 MenACYW1-dose scheduleEXPERIMENTAL1 dose of MenACYW conjugate vaccine to participants aged 2 through 6 years of age
Group 4 Royal MenAC1-dose scheduleACTIVE_COMPARATOR1 dose of Royal's MenAC conjugate vaccine to participants aged 2 through 6 years of age
Group 1: MenACYW conjugate vaccineEXPERIMENTALParticipants will receive MenACYW Conjugate Vaccine (MenQuadfi®): 2-dose schedule (1+1); dose 1 (priming dose) at 6-7 months of age and dose 2 (booster dose) at 12-13 months of age (MenQuadfi®)
Group 2: Nimenrix®ACTIVE_COMPARATORParticipants will receive Nimenrix®: 2-dose schedule (1+1); dose 1 (priming dose) at 6-7 months of age and dose 2 (booster dose) at 12-13 months of age
MenACYW conjugate vaccineEXPERIMENTALMenACYW conjugate vaccine single injection on Day 01
Groups 1a, 1b and 1c Cohort Ia (India)EXPERIMENTAL2 injections of MenACYW conjugate vaccine: at 6 months of age and second dose at 12 months of age (group 1a) or at 15 months of age (group 1b) or at 16 months of age (group 1c) + co-administered routine pediatric vaccines
Group 2 Cohort Ia (India)ACTIVE_COMPARATOR2 injections of Menactra vaccine: at 9 months of age and second dose at 16 months of age + co-administered routine pediatric vaccines
Groups 3 Cohort Ib (RSA)EXPERIMENTAL2 injections of MenACYW conjugate vaccine: at 6 months of age and second dose between 12 and 16 months of age + co-administered routine pediatric vaccines
Group 4 Cohort Ib (RSA)ACTIVE_COMPARATOR2 injections of Menactra vaccine: at 9 months of age and second dose between 12 and 16 months of age + co-administered routine pediatric vaccines
Groups 5a and 5b Cohort IIa (India)EXPERIMENTAL3 injections of MenACYW conjugate vaccine: at 6-8 weeks of age and second dose at 14-16 weeks of age with a booster dose administered at 12 months of age (group 5a) or at 15 months of age (group 5b) + co-administered routine pediatric vaccines
Group 6 Cohort IIa (India)OTHERroutine pediatric vaccines only
Group 7 Cohort IIb (RSA)EXPERIMENTAL3 injections of MenACYW conjugate vaccine: at 6-8 weeks of age and second dose at 14-16 weeks of age with a booster dose administered between 12 and 15 months of age + co-administered routine pediatric vaccines
Group 8 Cohort IIb (RSA)OTHERroutine pediatric vaccines only
Group 1EXPERIMENTALParticipants will receive a first booster dose of MenACYW conjugate vaccine at Day 1 and a second booster dose at year 5 of study MEQ00073
Group 2EXPERIMENTALParticipants will receive a single booster dose of MenACYW conjugate vaccine at year 5 of study MEQ00073
Group 1: MenACYW Conjugate Vaccine + 9vHPV + Tdap-IPV Vaccines (Sequential Administration)EXPERIMENTALParticipants received 0.5-milliliter (mL) intramuscular injection of MenACYW Conjugate vaccine on Day 01 and 0.5-mL intramuscular injection of 9vHPV + Tdap-IPV vaccines (sequentially after MenACYW vaccine) at Day 31.
Group 2: Nimenrix® + 9vHPV + Tdap-IPV Vaccines (Sequential Administration)ACTIVE_COMPARATORParticipants received 0.5-mL intramuscular injection of Nimenrix® vaccine on Day 01 and 0.5-mL intramuscular injection of 9vHPV + Tdap-IPV vaccines (sequentially after Nimenrix® vaccine) at Day 31.
Group 3: MenACYW Conjugate Vaccine + 9vHPV + Tdap-IPV Vaccines (Concomitant Administration)EXPERIMENTALParticipants received 0.5-mL intramuscular injection of MenACYW Conjugate vaccine concomitantly with 9vHPV + Tdap-IPV vaccines on Day 01.
Group 2: Menactra® vaccineACTIVE_COMPARATORParticipants received a single IM dose of Menactra® vaccine on Day 0.
Group 3EXPERIMENTALMenACYW conjugate vaccine, 1 vaccination, adults in India aged ≥ 56 years
Group 4ACTIVE_COMPARATORQuadri Meningo™, 1 vaccination, adults in India aged ≥ 56 years
Group 5EXPERIMENTALMenACYW conjugate vaccine, 1 vaccination, children and adolescents in India aged 2 to 17 years
Group 6ACTIVE_COMPARATORMenactra®, 1 vaccination, children and adolescents in India aged 2 to 17 years
Group 7EXPERIMENTALMenACYW conjugate vaccine, 1 vaccination, children and adolescents in RSA aged 2 to 17 years
Group 8ACTIVE_COMPARATORMenactra®, 1 vaccination, children and adolescents in RSA aged 2 to 17 years
Group 1: MenACYW Conjugate Vaccine (MET 49 - Menomune-primed Participants)EXPERIMENTALParticipants who received a single dose of Menomune vaccine in a previous study MET49, provided a blood sample for assessment of antibody persistence (at enrollment \[Day 0\]) followed by a single intramuscular (IM) dose of MenACYW Conjugate vaccine, at Day 0, during Stage I in the present study (MEQ00066).
Group 2: MenACYW Conjugate Vaccine (MET49 - MenACYW Conjugate Vaccine-primed Participants)EXPERIMENTALParticipants who received a single dose of MenACYW Conjugate vaccine in a previous study MET49, provided a blood sample for assessment of antibody persistence (at enrollment \[Day 0\]) followed by a single IM dose of MenACYW Conjugate vaccine at Day 0, during Stage I in the present study (MEQ00066).
Group 3: MenACYW Conjugate Vaccine (MET49: Menomune-primed Participants)EXPERIMENTALParticipants who received a single dose of Menomune vaccine in a previous study MET49, provided a blood sample for assessment of antibody persistence at enrollment (Day 0) during Stage I in the present study (MEQ00066), followed by receiving a single IM dose of MenACYW Conjugate vaccine at Stage II in the present study (MEQ00066).
Group 4: MenACYW Conjugate Vaccine (MET49: MenACYW-primed Participants)EXPERIMENTALParticipants who received a single dose of MenACYW Conjugate vaccine in a previous study MET49, provided a blood sample for assessment of antibody persistence at enrollment (Day 0) during Stage I in the present study (MEQ00066), followed by receiving a single IM dose of MenACYW Conjugate vaccine at Stage II in the present study (MEQ00066).
Group 5: Menomune-primed Participants (MET44)OTHERParticipants who received a single dose of Menomune vaccine in a previous study MET44, provided a blood sample for assessment of antibody persistence at enrollment (Day 0) during Stage I in the present study (MEQ00066). These participants did not receive any vaccination in the present study (MEQ00066).
Group 6: MenACYW Conjugate Vaccine-primed Participants (MET44)OTHERParticipants who received a single dose of MenACYW Conjugate vaccine in a previous study MET44, provided a blood sample for assessment of antibody persistence at enrollment (Day 0) during Stage I in the present study (MEQ00066). These participants did not receive any vaccination in the present study (MEQ00066).
Group 2: Nimenrix® VaccineACTIVE_COMPARATORHealthy, toddlers aged 12 to 23 months received a single dose of Nimenrix® vaccine on Day 0.
Group 3: NeisVac-C® VaccineACTIVE_COMPARATORHealthy, toddlers aged 12 to 23 months received a single dose of NeisVac-C® vaccine on Day 0.
Group 1: MenACYWEXPERIMENTALParticipants received 3 doses of meningococcal polysaccharide (serogroups A, C, Y and W) tetanus toxoid \[MenACYW conjugate vaccine\] 0.5 milliliter (mL) as an intramuscular (IM) injection at dose 1: 2 months of age (MoA), dose 2: 4 MoA, and dose 3: 12 to 18 MoA along with routine pediatric vaccines. The routine pediatric vaccines: hexavalent vaccine (combined diphtheria, tetanus, acellular pertussis, hepatitis B, inactivated poliovirus and haemophilus influenzae type b conjugate vaccine \[DTaP-IPV-HB-Hib\], the pneumococcal vaccine (pneumococcal conjugate vaccine \[10-valent, adsorbed\] {PCV10} were administered in a 2+1 regimen (ie, 2 doses in infancy \[first between 6 and 12 weeks of age and second between 4 to 5 MoA\] and 1 final dose in the second year of life \[12 to 18 MoA\]); and the measles, mumps, rubella (MMR) vaccine was administered at 12 to 18 MoA.
Group 2: NimenrixACTIVE_COMPARATORParticipants received 3 doses of Nimenrix® 0.5 mL as an IM injection at dose 1: 2 MoA, dose 2: 4 MoA, and dose 3: 12 to 18 MoA along with routine pediatric vaccines. The routine pediatric vaccines: hexavalent vaccine (DTaP-IPV-HB-Hib), the PCV10 were administered in a 2+1 regimen (ie, 2 doses in infancy \[first between 6 and 12 weeks of age and second between 4 to 5 MoA\] and 1 final dose in the second year of life \[12 to 18 MoA\]); and the MMR vaccine was administered at 12 to 18 MoA.
Group 3: MenACYWEXPERIMENTALParticipants received 3 doses of MenACYW conjugate vaccine 0.5 mL as an IM injection at dose 1: 2 MoA, dose 2: 4 MoA, and dose 3: 12 to 18 MoA along with routine pediatric vaccines. The routine pediatric vaccines: hexavalent vaccine (DTaP-IPV-HB-Hib), the pneumococcal conjugate vaccine (13-valent, adsorbed) \[PCV13\] were administered in a 2+1 regimen (ie, 2 doses in infancy \[first between 6 and 12 weeks of age and second between 4 to 5 MoA\] and 1 final dose in the second year of life \[12 to 18 MoA\]); and the MMR vaccine was administered at 12 to 18 MoA.
Group 4: MenACYWEXPERIMENTALParticipants received 4 doses of MenACYW conjugate vaccine 0.5 mL as an IM injection at dose 1: 2 MoA, dose 2: 4 MoA, and dose 3: 6 MoA and dose 4: 12 to 18 MoA along with routine pediatric vaccines. The routine pediatric vaccines: hexavalent vaccine (DTaP-IPV-HB-Hib), the PCV13 were administered in a 2+1 regimen (concomitantly with the first and second doses in infancy \[first between 6 and 12 weeks of age and second between 4 to 5 MoA\] and the toddler dose of MenACYW conjugate vaccine \[12 to 18 MoA\]); and the MMR vaccine was administered at 12 to 18 MoA. The third dose of MenACYW conjugate vaccine was administered alone, without any other routine pediatric vaccines.
Group 1: MenACYW Conjugate Vaccine (Mexico)EXPERIMENTALParticipants aged 2 months (at the time of enrollment) received Meningococcal Polysaccharide (Serogroups A, C, Y, and W) Tetanus toxoid (MenACYW) Conjugate vaccine at the age of Months 2, 6, and 12 along with Prevnar 13®, Hexacima®, vaccines at the age of Months 2, 4, 6 and 12; RotaTeq® vaccine at the age of Months 2, 4 and 6 and measles, mumps, rubella (MMR®II) vaccine at the age of Month 12.
Group 2: Menveo® (Mexico)ACTIVE_COMPARATORParticipants aged 2 months (at the time of enrollment) received Menveo® vaccine at the age of Months 2, 4, 6, and 12 along with Prevnar 13®, Hexacima® vaccines at the age of Months 2, 4, 6 and 12; RotaTeq® vaccine at the age of Months 2, 4 and 6, and MMR®II vaccine at the age of Month 12.
Group 3: MenACYW Conjugate Vaccine (Russian Federation)EXPERIMENTALParticipants aged 2 months (at the time of enrollment) received MenACYW Conjugate vaccine at the age of Months 3, 6, and 12 along with Prevnar 13® vaccine at the age of Months 2, and 4.5; Pentaxim® vaccine at the age of Months 3, 4.5, and 6; ENGERIX-B® vaccine at the age of Month 6 and MMR vaccine at the age of Month 12.
Group 4: Routine Pediatric Vaccines (Russian Federation)OTHERParticipants aged 2 months (at the time of enrollment) received Prevnar 13® vaccine at the age of Months 2, and 4.5; Pentaxim® vaccine at the age of Months 3, 4.5, and 6; ENGERIX-B® vaccine at the age of Month 6 and MMR vaccine at the age of Month 12.
Group 1: MenACYW Conjugate Vaccine + Bexsero® (2, 4, and 12 to 13 Months)EXPERIMENTALParticipants aged 2 months (at the time of enrollment) received MenACYW Conjugate vaccine at 3 months and at 12 to 13 months of age, Bexsero® at 2, 4, and 12 to 13 months of age along with Infanrix hexa® vaccine at 2, 3, and 4 months of age; Rotarix® vaccine at 2 and 3 months of age; and Prevenar 13® vaccine at 2 and 4 months of age.
Group 2: MenACYW Conjugate Vaccine + Bexsero® (2 and 4 Months)EXPERIMENTALParticipants aged 2 months (at the time of enrollment) received MenACYW Conjugate vaccine at 3 months and at 12 to 13 months of age, Bexsero® at 2 and 4 months of age along with Infanrix hexa® vaccine at 2, 3, and 4 months of age; Rotarix® vaccine at 2 and 3 months of age; and Prevenar 13® vaccine at 2 and 4 months of age.
Group 3: Bexsero® (2, 4, and 12 to 13 Months)ACTIVE_COMPARATORParticipants aged 2 months (at the time of enrollment) received Bexsero® at 2, 4, and 12 to 13 months of age along with Infanrix hexa® vaccine at 2, 3, and 4 months of age; Rotarix® vaccine at 2 and 3 months of age; and Prevenar 13® vaccine at 2 and 4 months of age.
Group 2: MENVEO®ACTIVE_COMPARATORHealthy infants aged \>= 42 to \<= 89 days (at the time of enrollment) received MENVEO® Conjugate Vaccine at the age of Months 2, 4, 6, and 12 along with Pentacel® (DTaP-IPV/Hib vaccine) at 2, 4, and 6 months of age; PREVNAR 13® (PCV13) at 2, 4, 6, and 12 months of age; RotaTeq® (rotavirus vaccine) at 2, 4, and 6 months of age; ENGERIX-B® (hepatitis B vaccine) at 2 and 6 months of age; and M-M-R® II (measles, mumps, and rubella vaccine) and VARIVAX® (varicella vaccine) at 12 months of age.
Group 1aEXPERIMENTALMenACYW conjugate vaccine and routine vaccines at 2, 4, 6, and 12 to 15 months of age
Group 1bEXPERIMENTALMenACYW conjugate vaccine at 2, 4, 6, and 15 to 18 months of age and routine vaccines at 2, 4, 6, 12 to 15 months of age, and 15 to 18 months of age
Group 2aACTIVE_COMPARATORMENVEO® at 2, 4, 6, and 12 months of age and routine vaccines at 2, 4, 6, 12, and 15 to 18 months of age
Group 2bACTIVE_COMPARATORMENVEO® at 2, 4, 6, and 12 months of age and routine vaccines at 2, 4, 6, 12, and 15 to 18 months of age
Group 1:MenACYW Conjugate Vaccine(Previous Exposed to MenACYW)EXPERIMENTALParticipants who received a single dose of MenACYW conjugate vaccine 3 years earlier in a previous vaccine study (MET54), received a booster dose of MenACYW conjugate vaccine at Day 0 in this study (MET62).
Group2:MenACYW Conjugate Vaccine(Previous Exposed to Nimenrix)EXPERIMENTALParticipants who received a single dose of Nimenrix® vaccine 3 years earlier in a previous vaccine study (MET54), received a booster dose of MenACYW conjugate vaccine at Day 0 in this study (MET62).
Group 1(Meningococcal Vaccine-Naive):MenACYW Conjugate VaccineEXPERIMENTALHealthy, meningococcal vaccine naive toddlers aged 12 to 23 months received a single dose of MenACYW Conjugate vaccine on Day 0.
Group 2 (Meningococcal Vaccine-Naive): Nimenrix®EXPERIMENTALHealthy, meningococcal vaccine naive toddlers aged 12 to 23 months received a single dose of Nimenrix® vaccine on Day 0.
Group 3 (MenC-Primed): MenACYW Conjugate VaccineEXPERIMENTALHealthy, meningococcal C vaccine primed toddlers aged 12 to 23 months received a single dose of MenACYW Conjugate vaccine on Day 0.
Group 4 (MenC-Primed): Nimenrix®EXPERIMENTALHealthy, meningococcal C vaccine primed toddlers aged 12 to 23 months received a single dose of Nimenrix® vaccine on Day 0.
Group 2: MENVEO® VaccineACTIVE_COMPARATORHealthy, meningococcal-vaccine naïve participants aged 2 to 9 years received a single dose of MENVEO® Conjugate vaccine on Day 0.
South Korea(Group1):MenACYW Conjugate + MMR+ Varicella VaccineEXPERIMENTALHealthy, meningococcal-vaccine naïve toddlers (aged 12 to 23 months) received single dose of MenACYW Conjugate vaccine, MMR vaccine, and varicella vaccine on Day 0.
South Korea (Group 2): MenACYW Conjugate VaccineEXPERIMENTALHealthy, meningococcal-vaccine naïve toddlers (aged 12 to 23 months) received single dose of MenACYW Conjugate vaccine on Day 0.
South Korea (Group 3): MMR + Varicella VaccineACTIVE_COMPARATORHealthy, meningococcal-vaccine naïve toddlers (aged 12 to 23 months) received single dose of MMR vaccine and varicella vaccine on Day 0.
Thailand (Group 10):MenACYW Conjugate +MMR+Varicella VaccineEXPERIMENTALHealthy, meningococcal-vaccine naïve toddlers (aged 12 to 23 months) received single dose of MenACYW Conjugate vaccine, MMR vaccine, and varicella vaccine on Day 0.
Thailand (Group 11):MenACYW Conjugate VaccineEXPERIMENTALHealthy, meningococcal-vaccine naïve toddlers (aged 12 to 23 months) received single dose of MenACYW Conjugate vaccine on Day 0.
Thailand (Group 12): MMR + Varicella VaccineACTIVE_COMPARATORHealthy, meningococcal-vaccine naïve toddlers (aged 12 to 23 months) received single dose of MMR vaccine and varicella vaccine on Day 0.
Mexico (Group 4): MenACYW Conjugate + DTaP-IPV-HB-Hib VaccineEXPERIMENTALHealthy, meningococcal-vaccine naïve toddlers (aged 12 to 23 months) received single dose of MenACYW Conjugate vaccine and diphtheria, tetanus, acellular pertussis, hepatitis B, poliomyelitis and Haemophilus influenzae type-b (DTaP-IPV-HB-Hib) vaccine on Day 0.
Mexico (Group 5): MenACYW Conjugate VaccineEXPERIMENTALHealthy, meningococcal-vaccine naïve toddlers (aged 12 to 23 months) received single dose of MenACYW Conjugate vaccine on Day 0.
Mexico (Group 6): DTaP-IPV-HB-Hib VaccineACTIVE_COMPARATORHealthy, meningococcal-vaccine naïve toddlers (aged 12 to 23 months) received single dose of DTaP-IPV-HB-Hib vaccine on Day 0.
Russian Federation (Group7): MenACYW Conjugate + PCV13 VaccineEXPERIMENTALHealthy, meningococcal-vaccine naïve toddlers (aged 15 to 23 months) received single dose of MenACYW Conjugate vaccine and pneumococcal Conjugate vaccine (PCV13) on Day 0.
Russian Federation (Group 8): MenACYW Conjugate VaccineEXPERIMENTALHealthy, meningococcal-vaccine naïve toddlers (aged 12 to 14 months or 16 to 23 months) received single dose of MenACYW Conjugate vaccine on Day 0.
Russian Federation (Group 9): PCV13 VaccineACTIVE_COMPARATORHealthy, meningococcal-vaccine naïve toddlers (aged 15 to 23 months) received single dose of PCV13 vaccine on Day 0.
Group 2: Menomune® VaccineACTIVE_COMPARATORHealthy, adult participants aged ≥56 years received a single dose of Menomune®- A/C/Y/W-135 Vaccine on Day 0.
MenACYW Conjugate Vaccine Lot 1EXPERIMENTALHealthy, meningococcal-vaccine naive adolescents aged 10 to 17 years (Group 1a) and adults aged 18 to 55 years (Group 1b) received a single dose of MenACYW conjugate vaccine from lot 1 on Day 0.
MenACYW Conjugate Vaccine Lot 2EXPERIMENTALHealthy, meningococcal-vaccine naive adolescents aged 10 to 17 years (Group 2a) and adults aged 18 to 55 years (Group 2b) received a single dose of MenACYW conjugate vaccine from lot 2 on Day 0.
MenACYW Conjugate Vaccine Lot 3EXPERIMENTALHealthy, meningococcal-vaccine naive adolescents aged 10 to 17 years (Group 3a) and adults aged 18 to 55 years (Group 3b) received a single dose of MenACYW conjugate vaccine from lot 3 on Day 0.
Menactra®ACTIVE_COMPARATORHealthy, meningococcal-vaccine naive adolescents aged 10 to 17 years (Group 4a) and adults aged 18 to 55 years (Group 4b) received a single dose of Menactra® on Day 0.
Group 3: MenACYW Conjugate Vaccine+Tdap+HPVEXPERIMENTALHealthy, meningococcal-vaccine naïve participants aged 10 to 17 years received a single dose of MenACYW Conjugate vaccine, Tetanus Toxoid, Reduced Diphtheria Toxoid and Acellular Pertussis Vaccine Adsorbed (Tdap), and Dose 1 of HPV Vaccine on Day 0. HPV Vaccine Dose 2 and Dose 3 were given at 2 and 6 months, respectively, after Dose 1 given on Day 0.
Group 4: Tdap+HPVACTIVE_COMPARATORHealthy, meningococcal-vaccine naïve participants aged 10 to 17 years received a single dose of Tdap and Dose 1 of HPV Vaccine on Day 0. HPV Vaccine Dose 2 and Dose 3 were given at 2 and 6 months, respectively, after Dose 1 given on Day 0.

Interventions

NameTypeDescription
MenQuadfi® (Meningococcal Polysaccharide [Serogroups A, C, W, and Y] Tetanus Toxoid Conjugate Vaccine) (Sanofi Pasteur Inc., Swiftwater, PA, USA)BIOLOGICALPharmaceutical form:Liquid solution-Route of administration:IM injection
Menhycia® (ACYW135 Meningococcal Conjugate Vaccine [CRM197]) (CanSino Biologics Inc., China)BIOLOGICALPharmaceutical form:Lyophilized powder (MenAC conjugate vaccine) and liquid solution (MenYW135 conjugate vaccine)-Route of administration:IM injection
MenACYW conjugate vaccineBIOLOGICALPharmaceutical form:Liquid solution-Route of administration:Intramuscular (IM) injection
MenACYW135 polysaccharide vaccineBIOLOGICALPharmaceutical form: Lyophilized powder-Route of administration:IM injection
MenAC conjugate vaccineBIOLOGICALPharmaceutical form:Lyophilized powder-Route of administration:IM injection
Meningococcal Polysaccharide (Serogroups A, C, W, and Y) Tetanus Toxoid Conjugate VaccineBIOLOGICALPharmaceutical form:Liquid solution-Route of administration:Intramuscular injection
Meningococcal Polysaccharide (Serogroups A, C, Y, and W) Tetanus Toxoid Conjugate VaccineBIOLOGICALLiquid solution - intramuscular
Meningococcal (Groups A, C, Y and W 135) Polysaccharide Diphtheria Toxoid Conjugate VaccineBIOLOGICALLiquid solution - intramuscular
Oral bivalent types 1 and 3; Poliomyelitis Vaccine (OPV)BIOLOGICALOral suspension - oral
Pneumoccocal VaccineBIOLOGICALSuspension for injection - intramuscular
Measles, Mumps, and Rubella Vaccine live (MMR)BIOLOGICALLyophilized powder for injection - subcutaneous
DTwP-HepB-Hib-IPV vaccineBIOLOGICALSuspension - intramuscular
DTaP-IPV-Hib-HepB vaccineBIOLOGICALLiquid solution - intramuscular
Hepatitis A vaccineBIOLOGICALLyophilized powder for injection - subcutaneous
Rotavirus vaccineBIOLOGICALOral solution - oral
Typhoid conjugate vaccine (TCV)BIOLOGICALSuspension for injection - intramuscular
Measles vaccineBIOLOGICALFreeze-dried powder for reconstitution and injection - subcutaneous
Varicella vaccine liveBIOLOGICALSterile powder and diluent for injection - subcutaneous
Meningococcal Polysaccharide (Serogroups A, C, Y, and W) Tetanus Toxoid Conjugate Vaccine (MenACYW Conjugate vaccine)BIOLOGICALPharmaceutical form: Liquid solution for injection Route of administration: Intramuscular
Meningococcal group A, C, W-135, and Y conjugate vaccineBIOLOGICALPharmaceutical form: Powder and solvent for solution for injection Route of administration: Intramuscular
Human Papillomavirus 9-valent Vaccine (9vHPV)BIOLOGICALPharmaceutical form: Suspension for injection Route of administration: Intramuscular
Tetanus Toxoid, Reduced Diphtheria Toxoid and Acellular Pertussis Vaccine Adsorbed Combined with Inactivated Poliomyelitis Vaccine (Tdap-IPV)BIOLOGICALPharmaceutical form: Suspension for injection Route of administration: Intramuscular
Meningococcal polysaccharide (serogroups A,C,Y and W) tetanus toxoid conjugate vaccineBIOLOGICALPharmaceutical form: solution for injection; Route of administration: intramuscular, 0.5 mL
Meningococcal polysaccharide (serogroups A,C,Y and W-135) diphtheria toxoid conjugate vaccineBIOLOGICALPharmaceutical form: sterile aqueous solution; Route of administration: intramuscular, 0.5 mL
Meningococcal polysaccharide (serogroups A, C, Y and W-135) vaccineBIOLOGICALPharmaceutical form: reconstituted solution for injection; Route of administration: intramuscular, 0.5 mL
Blood sampleOTHERBlood sample for assessment of antibody persistence.
Meningococcal polysaccharide group A, C, W-135 and Y Conjugate vaccineBIOLOGICALPharmaceutical form: Powder and solvent for suspension for injection Route of administration: Intramuscular
Meningococcal group C polysaccharide Conjugate vaccine adsorbedBIOLOGICALPharmaceutical form: Suspension for injection Route of administration: Intramuscular
DTaP-IPV-HB-Hib vaccineBIOLOGICALDiphtheria, tetanus, pertussis, hepatitis B, poliomyelitis and Haemophilus influenzae type b vaccine
Pneumococcal vaccine (13-valent)BIOLOGICALPneumococcal polysaccharide conjugate vaccine (13-valent, adsorbed)
Pneumococcal vaccine (10-valent)BIOLOGICALPneumococcal polysaccharide conjugate vaccine (10-valent, adsorbed)
MMR vaccineBIOLOGICALMeasles, mumps, and rubella vaccine
Meningococcal (Groups A, C, Y and W 135) Oligosaccharide Diphtheria CRM197 Conjugate VaccineBIOLOGICALPharmaceutical form: Lyophilized powder combined with liquid component Route of administration : Intramuscular
Measles, Mumps, and Rubella Virus Vaccine LiveBIOLOGICALPharmaceutical form: Lyophilized live virus vaccine Route of administration : Subcutaneous
Pneumococcal 13-valent Conjugate VaccineBIOLOGICALPharmaceutical form: Suspension for injection Route of administration: Intramuscular
Diphtheria, Tetanus, Pertussis (Acellular, Component) Poliomyelitis (inactivated) Vaccine, and Haemophilus influenza type b Conjugate VaccineBIOLOGICALPharmaceutical form: Powder and suspension for injection Route of administration: Intramuscular
Hepatitis B VaccineBIOLOGICALPharmaceutical form: Suspension for injection Route of administration: Intramuscular
Rotavirus Vaccine, Live, PentavalentBIOLOGICALPharmaceutical form: Oral solution Route of administration: Oral
Diphtheria, tetanus, pertussis (acellular component), hepatitis B, poliomyelitis (inactivated), and Haemophilus influenzae type b conjugate vaccineBIOLOGICALPharmaceutical form:Suspension for injection Route of administration: Intramuscular
Meningococcal group B vaccineBIOLOGICALPharmaceutical form: suspension for injection; route of administration: deep intramuscular, 0.5 mL
Diphtheria, tetanus, pertussis (acellular component), hepatitis B, poliomyelitis (inactivated) vaccineBIOLOGICALPharmaceutical form: powder and suspension for suspension injection; route of administration: deep intramuscular, 0.5 mL
Human rotavirus RIX4414 strain vaccineBIOLOGICALPharmaceutical form: oral suspension; route of administration: oral, 1.5 mL
Pneumococcal 13-valent polysaccharide conjugate vaccineBIOLOGICALPharmaceutical form: suspension for injection; route of administration: intramuscular, 0.5 mL
Meningococcal polysaccharide (serogroups A,C,Y and W) tetanus toxoid Conjugate vaccine (MenACYW Conjugate vaccine)BIOLOGICALPharmaceutical form: Liquid solution. Route of administration: Intramuscular
Meningococcal (Groups A, C, Y and W 135) Oligosaccharide Diphtheria CRM197 Conjugate Vaccine (MENVEO®)BIOLOGICALPharmaceutical form: Lyophilized powder combined with liquid components Route of administration: Intramuscular
Diphtheria, Tetanus, Acellular Pertussis, Poliovirus and Haemophilus b VaccineBIOLOGICALPharmaceutical form: Liquid DTaP-IPV to reconstitute lyophilized ActHIB Route of administration: Intramuscular
Measles, Mumps, and Rubella Virus VaccineBIOLOGICALPharmaceutical form: Lyophilized live virus vaccine Route of administration: Subcutaneous
Varicella Virus VaccineBIOLOGICALPharmaceutical form: Suspension for injection Route of administration: Subcutaneous
MenACYW-135 conjugate vaccineBIOLOGICALMeningococcal (Groups A, C, Y and W-135) oligosaccharide diphtheria CRM197 conjugate vaccine, 0.5 mL, intramuscular
DTaP-IPV//Hib vaccineBIOLOGICALDTaP-IPV//Hib vaccine at 2, 4, 6 and 12 to 15 (Group 1a)/15-18 (Group 1b and Group 2) months of age Intramuscular
Pentavalent rotavirus vaccineBIOLOGICALRotavirus vaccine at 2, 4, and 6 months of age, oral solution
Measles, mumps, rubella (MMR) vaccineBIOLOGICALMMR vaccine at 12 months of age, Subcutaneous
Varicella vaccineBIOLOGICALVaricella vaccine at 12 months of age
Meningococcal polysaccharide groups A, C, W-135 and Y Conjugate vaccineBIOLOGICAL0.5 mL, Intramuscular
Meningococcal Polysaccharide (Serogroups A, C, Y, and W) Tetanus Toxoid ConjugateBIOLOGICAL0.5 milliliter (mL), Intramuscular
MMRBIOLOGICALMeasles, Mumps, and Rubella Virus Vaccine Live; 0.5 mL, Subcutaneous
VaricellaBIOLOGICALVaricella Virus Vaccine Live; 0.5 mL, Subcutaneous
DTaP-IPV-HB-HibBIOLOGICALDiphtheria, Tetanus, Pertussis (acellular component), Hepatitis B, Poliomyelitis (inactivated), and Haemophilus influenzae type-b conjugate vaccine (adsorbed); 0.5 mL, Intramuscular
PCV13BIOLOGICALPneumococcal 13-valent Conjugate Vaccine; 0.5 mL, Intramuscular
Meningococcal Polysaccharide Vaccine, Groups A, C, Y, and W-135 CombinedBIOLOGICAL0.5 mL, Subcutaneous (SC), single dose on Day 0.
Meningococcal (Groups A, C, Y and W-135) Polysaccharide Diphtheria Toxoid Conjugate VaccineBIOLOGICAL0.5 mL, Intramuscular
Meningococcal Polysaccharide (Serogroups A, C, Y, and W135) Tetanus Toxoid Conjugate VaccineBIOLOGICAL0.5 milliliter (mL), Intramuscular (IM)
Meningococcal (Groups A, C, Y and W135) Oligosaccharide Diphtheria CRM197 Conjugate VaccineBIOLOGICAL0.5 mL, IM
Adacel®: Tetanus Toxoid, Reduced Diphtheria Toxoid and Acellular Pertussis Vaccine AdsorbedBIOLOGICAL0.5 mL, IM
GARDASIL®: Human Papillomavirus Quadrivalent (Types 6, 11, 16, and 18) Vaccine, RecombinantBIOLOGICAL0.5 mL, IM
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Eligibility Criteria

Age Range2 Months to 23 Months
SexALL
Healthy VolunteersYes
Study Sites3

Inclusion Criteria: * For Cohort I: Aged 12 months through 23 months on the day of inclusion. For Cohort II: Aged 6 months through 11 months on the day of inclusion. For Cohort III: Aged 2 months through 5 months on the day of inclusion * Born at full term of pregnancy (≥37 weeks) or born after a g...

Countries:ChinaCzechiaDenmarkFinlandGermanyPolandRomaniaVietnamIndiaSouth AfricaHungarySpainItalySingaporeJapanUnited StatesPuerto RicoSwedenMexicoRussiaUnited KingdomSouth KoreaThailand
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Recent Changes (Last 90 Days)

LOWSep 9, 2026NCT07710872Status: NOT_YET_RECRUITING → RECRUITING
LOWSep 9, 2026NCT07710872Status: NOT_YET_RECRUITING → RECRUITING
LOWAug 28, 2026NCT04936685lastUpdatePostDate: changed
LOWAug 28, 2026NCT04936685lastUpdatePostDate: changed
LOWJul 17, 2026NCT07710872NEW_TRIAL: changed
LOWJul 17, 2026NCT07710872NEW_TRIAL: changed