View clinical trials related to Meningococcal Infections.
Filter by: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.
The purpose of the study is to evaluate the immune response of toddlers, to a booster dose in the second year of life of two meningococcal C conjugated polysaccharide vaccine, and to assess the interchangeability of the two different vaccines.
This study will investigate the long-term protection offered by GSK Biologicals' meningococcal vaccine 134612 up to 3.5 years after vaccination. Subjects were vaccinated at 15 to 19 years of age. This extension phase starts 18 months after vaccination and part of the subjects who were vaccinated in the primary study will be enrolled in this extension phase. No new subjects will be enrolled. This protocol posting deals with objectives & outcome measures of the extension phase 18, 30 and 42 months after vaccination. The objectives & outcome measures of the primary phase are presented in a separate protocol posting (NCT00126945). The Protocol Posting has been updated in order to comply with the FDA Amendment Act, September 2007.
This study is evaluating antibody persistence at 1, 3 & 5 years post-fourth dose (i.e., at 2, 4 & 6 years of age, respectively) in subjects vaccinated in a previous study. This protocol posting deals with objectives & outcome measures of the extension phase at years 1, 3 and 5. The objectives & outcome measures of the first four doses are presented in a separate protocol posting (NCT00129129). This protocol posting has been amended in order to comply with the FDA Amendment Act of September 26, 2007.
Meningococcal disease is mostly caused by N. meningitidis of serogroups A, B, C, W-135, Y. Meningococcal polysaccharide-conjugate vaccines have the advantage to induce a T-cell dependant immune response while the existing polysaccharide vaccines induce a T-cell independent response, i.e. with no immune memory response. GSK Biologicals has developed a combined Men ACWY conjugate vaccine intended to protect against meningococcal disease due to serogroups A, C, W-135 and Y. In the vaccination phase of this study, the new MenACWY-TT conjugate vaccine will be evaluated in adolescents and adults using Mencevax™ ACWY as control. In the long-term follow-up phase (extension phase) of the study, the long-term protection offered by the new MenACWY-TT conjugate vaccine will be assessed up to five years after the vaccination in adolescents and adults using Mencevax™ ACWY as control. This protocol posting deals with objectives & outcome measures of both the primary & extension phases.
The booster phase of the study will evaluate the safety of Hib-MenCY-TT vaccine compared to a control group receiving licensed Hib conjugate vaccine at 12 to 15 months of age. This protocol posting deals with objectives & outcome measures of the booster phase. The objectives & outcome measures of the primary phase are presented in a separate protocol posting (NCT number = NCT00345579). No new recruitment will take place during this booster phase of the study. The Protocol Posting has been updated in order to comply with the FDA Amendment Act, Sep 2007.
Immunogenicity and Safety of the Concomitant Administration of a Tdap Vaccine and Meningococcal ACWY Conjugate Vaccine in Healthy Subjects Aged 11-25 Years
Safety and immunogenicity of meningococcal ACWY conjugate versus polysaccharide vaccine in children 2 to 10 years of age
The purpose of this study is to assess the safety and reactogenicity of a booster dose of diphtheria-tetanus-whole cell pertussis-hepatitis B virus/Haemophilus influenzae type b vaccine (DTPw-HBV/Hib) at 15-18 m and to assess the immunogenicity, safety, and reactogenicity of a dose of Mencevax™ Group A, C and W135 polysaccharide meningococcal vaccine (ACW) at 24 to 30 m in primed subjects. The Protocol Posting has been updated in order to comply with the FDA Amendment Act, Sep 2007.
Persistence of Antibody Response to N. meningitidis Group C in Children