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Antibody Responses Following Meningococcal Tetravalent (A, C, Y, and W-135) Conjugate Vaccination in Healthy Adults

Meningitis Clinical Trial

Official title:
Antibody Responses Following Meningococcal Tetravalent (A, C, Y, and W-135) Conjugate Vaccination in Healthy Adults Who Were Either Previously Vaccinated With Unconjugated Meningococcal Polysaccharide (Serogroups A, C or Serogroups A, C, Y, and W-135) Vaccine or Not Vaccinated With Meningococcal Vaccine

Clinical Trial Summary

This study was designed to generate data for the assessment of Meningococcal Polysaccharide Diphtheria Toxoid Conjugate vaccine (Menactra®) when given to adults aged 18 to 55 years.

Primary Objective:

To describe the antibody response to each serogroup prior to, and 4 to 6 weeks following, the administration of one dose of the investigational Meningococcal Polysaccharide Diphtheria Toxoid Conjugate vaccine (Menactra®), as measured by serum bactericidal activity using baby rabbit complement (SBA BR) in participants in each of the two study groups.

Secondary Objective:

To collect reference sera for the development and refinement of laboratory assays for the measurement of antibody responses to serogroups Y and W 135.

Clinical Trial Description

Enrollment was terminated before the planned sample size was achieved because the principal investigator and the Sponsor decided that sufficient sera had been obtained to meet the secondary objective of the study.

There were no safety concerns involved in the decision to stop enrollment. Subjects that were enrolled at the time completed the study as per protocol, the last subject last visit was on 29 April 2004. ;

Study Design

Allocation: Non-Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Prevention

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT00772629
Study type Interventional
Source Sanofi
Contact
Status Terminated
Phase Phase 2
Start date January 2004
Completion date April 2004
View Details
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