Active clinical trials for "Meningococcal Infections"

The purpose of this study is to assess the immunogenicity and safety of Menactra® vaccine given as a two-dose series in infants and toddlers. Primary Objectives: To assess the seroprotection rate (percentage of subjects with a serum bactericidal assay using human complement [SBA-HC] titer ≥ 1:8) 28 days after the second of 2 doses of Menactra® administered 3 to 6 months apart. Secondary Objectives: To assess the immune responses to meningococcal antigens (serogroups A, C, Y, and W-135) 28 days following the second vaccination with Menactra® using SBA-HC and SBA-BR titers. To assess the safety profile of Menactra® after each and any vaccination.

Invasive meningococcal disease is a worldwide problem with serious repercussions for those affected. Vaccination is recognized as the best way to combat it. The cost of vaccination is prohibitive in many low-resource settings at home and abroad. By harnessing the special immunologic properties of the skin, a dose reduction may be achieved by intradermal administration of the vaccine. The cost savings associated with dose reduction will increase availability of the vaccine.

This study has 2 phases, a vaccination phase and a long-term follow-up phase. In the vaccination phase of this study, the new meningococcal vaccine 134612 will be evaluated in children using Mencevax™ ACWY (in children above 2 years) or Meningitec™ (in children below 2 years) as controls. In the long-term follow-up phase of the study, the long-term protection offered by the vaccines will be assessed up to 5 years after vaccination. Subjects will be randomized in the primary vaccination phase of the study; no new subjects will be enrolled during the long-term follow-up phase of the study.

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

The purpose of this study is to demonstrate, in 2-10 year old subjects, the non-inferiority of meningococcal vaccine GSK134612 compared to licensed meningococcal vaccine Mencevax™. The Protocol Posting has been updated in order to comply with the FDA Amendment Act, Sep 2007.

The purpose of the study is to characterize the immunogenicity & safety of a booster dose of GSK Biologicals' meningococcal vaccine 134612 given at 12-15 months of age or at 15-18 months of age (co-administered with Infanrix®) in healthy toddlers primed with GSK Biological's Hib-meningococcal vaccine 792014. This study is single-blinded for the primary phase and open-label for the booster phase.

The purpose of this study is: To assess whether there are differences in antibody persistence eight months post primary (pre-booster) or in responses to the booster with regard to the Meningococcal C Conjugate (MCC) vaccine given in infancy. To examine levels of diphtheria and tetanus antibody pre- and post-booster, with regard to the carrier proteins contained in the conjugate vaccines.

Safety and immunogenicity of meningococcal ACWY conjugate versus polysaccharide vaccine in children 2 to 10 years of age

This study will be conducted in three stages. In the DTP booster stage at 15 to 24 months of age, all subjects will receive a booster dose of Tritanrix™-HepB/Hiberix™. In the Mencevax™ ACWY "full dose" stage at 24 to 30 months of age all subjects will receive a dose of Mencevax™ ACWY. In the Mencevax™ ACWY "small dose" stage at 30 to 36 months of age, the first 75 subjects in each of the two centers will be tested for boostability of the MenA and MenC immune response by giving a fifth of a dose of a Mencevax™ ACWY vaccine. The Protocol Posting has been updated in order to comply with the FDA Amendment Act, Sep 2007.

GlaxoSmithKline Philippines has submitted a registration file for its Purified Meningococcal Polysaccharide of Serogroup ACWY Vaccine (Mencevax ACWY). This study is being conducted to collect clinical data in the local target population in order to assess the occurrence of rare adverse events after vaccination as per the requirement of Philippines Bureau of Food and Drugs Directive.