Active clinical trials for "Meningitis, Meningococcal"

The purpose of this study is to evaluate the production of antibodies to a new conjugate vaccine, NmVac4-A/C/Y/W-135-DT, as a measure of vaccine effectiveness, compared to the production of antibodies to a similar, licensed meningococcal (Groups A, C, Y, W-135) polysaccharide diphtheria toxoid (DT) conjugate vaccine. The investigators will also evaluate the safety of NmVac4-A/C/Y/W-135-DT™ conjugate vaccine compared to the licensed vaccine. The hypothesis is that the test vaccine is comparable to the licensed active control 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 study is to assess immunogenicity and safety of MenABCWY vaccine in healthy adolescents and adults aged 15 to 25 years previously vaccinated with MenACWY vaccine

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 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.

Infant phase: To determine the safety of and production of antibodies by a group C meningococcal conjugate vaccine (MnCC), when given at 2, 3, and 4 months of age with routine vaccines. Booster phase: To compare the safety of and production of antibodies by MnCC with and without MMR and to compare the antibody response to that produced by a low dose of plain polysaccharide vaccine as a way of investigating immune memory

This study will evaluate the safety and immune response of Novartis Meningococcal ACWY conjugate vaccine in healthy adolescents and adults.

Hypothesis: Lower doses of each A/C/Y/W135 component of the meningococcal polysaccharide vaccine could confer a similar functional immunogenic response as the dose of 50 μg currently being used, and subsequently be equally protective. The purpose of this study is to evaluate the use of fractional dose tetravalent meningococcal polysaccharide vaccine to control outbreak especially caused by N. meningitidis serogroup W135 Primary Objectives: To measure the immunogenicity of a dose corresponding to one fifth of the amount of the licensed meningococcal A/C/Y/W135 polysaccharide vaccine, i.e. 10 μg for each component; and To measure the immunogenicity of a dose corresponding to one tenth of the licensed meningococcal A/C/Y/W135 polysaccharide vaccine, i.e. 5 μg for each component.