Safety and Immunogenicity of a Quadrivalent Meningococcal Conjugate Vaccine When Administered Concomitantly With Routine Pediatric Vaccines in Healthy Infants and Toddlers in the Russian Federation and Mexico — MET33  

Healthy Volunteers (Meningococcal Infection) Clinical Trial

Official title: Safety and Immunogenicity of a 3-Dose Schedule of an Investigational Quadrivalent Meningococcal Conjugate Vaccine When Administered Concomitantly With Routine Pediatric Vaccines in Healthy Infants and Toddlers

Status Completed

Clinical Trial Summary

Primary Objective:

1. To describe the vaccine seroprotection (antibody titer greater than or equal to [>=] 1:8) to the antigens (meningococcal serogroups A, C, Y, and W) present in MenACYW Conjugate vaccine or Menveo® measured by serum bactericidal assay using human complement (hSBA), for Groups 1 and 2 when administered concomitantly with routine pediatric vaccines in healthy infants and toddlers in Mexico.

2. To describe the vaccine seroprotection (antibody titer >=1:8) to the antigens (meningococcal serogroups A, C, Y, and W) present in MenACYW Conjugate vaccine measured by hSBA, for Group 3, when administered concomitantly with routine pediatric vaccines in healthy infants and toddlers in the Russian Federation.

Secondary Objective:

1. To describe hSBA vaccine seroresponse to the antigens (meningococcal serogroups A, C, Y, and W) 30 days after the last vaccination of the infant series, when administered concomitantly with routine pediatric vaccines in healthy infants and toddlers in Mexico and Russian Federation (RF).

2. To describe immunogenicity profile of routine pediatric vaccines when administered concomitantly with MenACYW Conjugate vaccine or Menveo®; or when administered alone.

3. To describe hSBA antibody responses against meningococcal serogroups A, C, Y, and W when MenACYW Conjugate vaccine and Menveo® are administered concomitantly with routine pediatric vaccines in Mexico and RF.

4. To describe antibody titers to the antigens present in MenACYW Conjugate vaccine and Menveo®, before the first vaccination and 30 days after the last vaccination of the infant series and in the second year of life, when administered concomitantly with routine pediatric vaccines in a subset of participants in Mexico and RF.

Clinical Trial Description

Study duration per participant was approximately 12 months. ;

Related Conditions & MeSH terms

• Healthy Volunteers (Meningococcal Infection)
• Meningococcal Infections

• NCT number: NCT03630705
• Study type: Interventional
• Source: Sanofi
• Status: Completed
• Phase: Phase 3
• Start date: October 17, 2018
• Completion date: February 18, 2022