Active clinical trials for "Meningococcal Infections"

In this extension study, V59P20E1, the sponsor was planning to assess 5-year antibody persistence in subjects who received one or two doses of MenACWY conjugate vaccine at 2 to 10 years of age, and to evaluate response to a booster dose administered 5 years after primary vaccination in the parent study V59P20 (NCT00616421).

This study is to confirm non-inferiority of the three MenACWY vaccines (Menveo, Menactra or Nimenrix) in adolescents, and to identify whether the number of previous doses of MenC influences the response to the MenACWY vaccine.

The purpose of the study was to evaluate the immunogenicity and safety profile of a single dose of Meningococcal Polysaccharide (Serogroups A, C, Y, and W) Tetanus Toxoid (MenACYW) Conjugate vaccine when given alone compared to that of the licensed Meningococcal groups A, C, W 135 and Y (NIMENRIX®) Conjugate vaccine. Observational objectives: To evaluate the antibody responses to the antigens (serogroups A, C, Y, and W) present in MenACYW Conjugate vaccine and NIMENRIX® measured by serum bactericidal assay using baby rabbit complement (rSBA) and by serum bactericidal assay using human complement (hSBA) To evaluate the antibody responses against tetanus in participants who received MenACYW Conjugate vaccine or NIMENRIX® vaccine To evaluate the safety profile of MenACYW Conjugate vaccine and NIMENRIX®

The aim of the study was to demonstrate non-inferiority of immunogenicity and evaluate the safety of a single dose of Meningococcal Polysaccharide (Serogroups A, C, Y, and W) Tetanus Toxoid conjugate vaccine (MenACYW conjugate vaccine) compared to a single dose of Meningococcal Polysaccharide Vaccine Serogroups A, C, Y, and W-135 Combined (Menomune® - A/C/Y/W-135) in adults 56 years of age and older in the United States. Primary objective: -To demonstrate the non-inferiority of the vaccine seroresponse to meningococcal serogroups A, C, Y, and W following the administration of a single dose of MenACYW conjugate vaccine compared to those observed following the administration of a single dose of Menomune® - A/C/Y/W-135. Secondary objective: -To compare the serum bactericidal assay using human complement (hSBA) antibody geometric mean titers of meningococcal serogroups A, C, Y, and W following the administration of MenACYW conjugate vaccine to those observed following the administration of Menomune® - A/C/Y/W-135. Observational objectives: To describe antibody titers against meningococcal serogroups A, C, Y, and W measured by hSBA at baseline (before vaccination) and 30 days after vaccination with MenACYW conjugate vaccine or Menomune® - A/C/Y/W-135 in a subset of 100 participants per treatment group. To describe the safety profile of MenACYW conjugate vaccine compared to that of the licensed Menomune® - A/C/Y/W-135 after a single administration.

The purpose of this trial is to describe the safety and antibody response to revaccination with Menactra vaccine in persons who received their first dose at ≥11 years of age. Primary Objective: - To evaluate the antibody responses to meningococcal serogroups A, C, Y, and W-135, measured by serum bactericidal assay using human complement (SBA-HC), induced by Menactra vaccine in subjects who were first vaccinated with Menactra 4-6 years ago. Secondary Objective: - To evaluate the antibody responses to serogroups A, C, Y, and W-135 in serum specimens collected 6 days post-vaccination in a subset of study population. Observational Objective: - To describe the rates of immediate reactions, solicited injection-site and systemic reactions, unsolicited adverse events and serious adverse events following vaccination.

The study was to evaluate the safety and and immune response of each of three lots of Novartis Meningococcal C Conjugate Vaccine (MenC-CRM Liquid) when administered to Healthy Toddlers.

This study is part of the post-licensure commitment to evaluate the safety and immunogenicity of Meningo A+C vaccine in healthy Chinese children 2 to 6 years of age. Primary Objective: To demonstrate the non-inferiority in terms of seroconversion rate for serogroups A and C, 30 days after a single dose of Sanofi Pasteur Meningococcal (Groups A and C) Polysaccharide Vaccine versus Lanzhou Institute for Biological Products Meningococcal (Groups A and C) Polysaccharide Vaccine. Secondary Objective: To describe the immunogenicity for serogroups A and C, 30 days after administration of the study vaccines given as a single dose. To describe the full reactogenicity profile after administration of the study vaccines given as a single dose.

This study is designed to evaluate the immunogenicity and the safety of a quadrivalent vaccine MenACWY-CRM in healthy subjects from 11 to 55 years of age in Korea.

This study compares the safety and immunogenicity profile of combined hepatitis A/B vaccine given alone or concomitantly with MenACWY-CRM to healthy adults.

The primary purpose of this study is to evaluate the persistence of bactericidal antibodies in children of approximately 22 to 45 months of age previously enrolled in the V59P22 study (NCT00667602) who received Novartis MenACWY Conjugate Vaccine or Meningococcal C Conjugate Vaccine. This is measured by percentage of subjects with human Serum Bactericidal Assay (hSBA) titers ≥ 1:8 directed against Neisseria meningitidis serogroups A, C, W-135, and Y. In addition the response one month post an additional dose of Novartis MenACWY will be measured by percentage of subjects with hSBA titers ≥ 1:8 and GMTs.