Immunogenicity and Safety Study of an Investigational Quadrivalent Meningococcal Conjugate Vaccine Administered Concomitantly With Routine Pediatric Vaccines in Healthy Infants and Toddlers
The primary objective of this study is to demonstrate the non-inferiority of the vaccine seroresponse to meningococcal serogroups A, C, Y, and W following administration of 2 doses of MenACYW conjugate vaccine compared to 2 doses of MENVEO® when given concomitantly with routine pediatric vaccines to infants and toddlers 6 to 7 months of age and 12 to 13 months of age. The secondary objectives of the study are: * To demonstrate the non-inferiority of the percentage of participants with antibody titers to meningococcal serogroups A, C, Y, and W ≥ 1:8 following administration of 2 doses of MenACYW conjugate vaccine compared to 2 doses of MENVEO® when given concomitantly with pediatric routine vaccines to infants and toddlers at 6 to 7 months of age and 12 to 13 months of age. * To describe the antibody response against meningococcal serogroups A, C, Y, and W 30 days after the second vaccination at 12 to 13 months of age with MenACYW conjugate vaccine or MENVEO®. * To describe the antibody response against meningococcal serogroups A, C, Y, and W 30 days and 6 months after the first vaccination at 6 to 7 months of age with MenACYW conjugate vaccine or MENVEO®. * To describe the antibody response against meningococcal serogroups A, C, Y, and W 30 days after the second vaccination at 20 to 23 months of age with MenACYW conjugate vaccine or Menactra®.
• Aged 6 to 7 months (168 to 224 days) or 17 to 19 months on the day of the first visit
• Informed consent form has been signed and dated by the parent(s) or other guardian and by an independent witness if required by local regulations
• Subject and parent/guardian are able to attend all scheduled visits and to comply with all trial procedures
• For subjects 6 to 7 months of age at enrollment (Group 1 and Group 2), documented history of having received 2 doses of diphtheria, tetanus and acellular pertussis (DTaP), Haemophilus influenza type B (Hib), inactivated poliovirus (IPV), pneumococcal, hepatitis B (for children who received hepatitis B at 2 and 4 months of age, prior receipt of 3 doses of hepatitis B), and rotavirus vaccines
• For subjects to be enrolled at 17 to 19 months of age (Group 3 and Group 4), documented history of having received all routine pediatric vaccines recommended by the Advisory Committee on Immunization Practices (ACIP) up to the age of enrollment