Study of Reduced Dose of Menomune® in Children Who Previously Received Meningococcal Diphtheria Toxoid Conjugate Vaccine

Study Overview
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Brief Summary
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This study was designed to simulate meningococcal challenge by vaccination with a fractional combined dose of unconjugated meningococcal polysaccharides A, C, Y, and W-135, Menomune® in children who were vaccinated with one dose of TetraMenD at least 18 months earlier. Primary Objective: To evaluate and compare the antibody responses to a reduced dose of Menomune® in participants who had previously received a tetravalent meningococcal diphtheria toxoid conjugate vaccine to those responses in participants who received the same reduced dose of Menomune® but had not previously received any meningococcal vaccine.

Detailed Description
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This was a two stage, controlled, open-label trial. Stage I of the trial simulated meningococcal challenge Stage II of the trial evaluated the meningococcal vaccine naïve participants from Stage I, who had also received a reduced dose of Menomune® vaccine in Stage I and were administered a full dose of Menactra® vaccine 6 months later.

Official Title
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Antibody Responses to a Reduced Dose of Menomune® in Children Who Previously Received an Experimental Tetravalent (A, C, Y, and W-135) Meningococcal Diphtheria Toxoid Conjugate Vaccine, TetraMenD

Conditions
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Meningitis, Meningococcemia, Neisseria Meningitidis

Intervention / Treatment
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* Biological: A/C/Y/W-135, Meningococcal Polysaccharide Vaccine (Menomune®)
* Biological: A/C/Y/W-135, Meningococcal Polysaccharide Vaccine (Menomune®)


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria : Stage I Participant is healthy, as determined by medical history and physical examination. Participant is at least 3 years of age but not yet 6 years of age at the enrolment. For the TetraMenD group: received one dose of TetraMenD as a participant in trial 603-02 no less than 18 months prior to enrolment For the Control group: no previous history of any meningococcal vaccination Parent/Guardian has signed Institutional Review Board- (IRB-) approved informed consent form. Stage II Participant is healthy, as determined by medical history and physical examination. Participant is at least 3 years of age but not yet 6 years of age at the time of enrollment in Stage 1. Enrolled in the Control group only and received one dose of the reduced dose Menomune at Stage 1. Parent/Guardian has signed Institutional Review Board- (IRB-) approved informed consent form. Exclusion Criteria : Serious chronic disease (i.e., cardiac, renal, neurologic, metabolic, rheumatologic, psychiatric etc.) Known or suspected impairment of immunologic function Acute medical illness with or without fever within the last 72 hours or an axillary temperature (≥ 99.5ºF [≥ 37.5ºC]) at the time of inclusion For Stage I, history of documented invasive meningococcal disease or previous meningococcal vaccination with exception of those participants recruited from Trial 603-02. For Stage II, history of documented invasive meningococcal disease or participant did not receive Reduced-dose Menomune® six months prior. Administration of immune globulin, other blood products within the last three months, injected or oral corticosteroids or other immunomodulatory therapy within six weeks of the study vaccine. Individuals on a tapering dose schedule of oral steroids lasting < 7 days may be included in the trial as long as they have not received more than one course within the last two weeks prior to enrollment. Antibiotic therapy within the 72 hours prior to vaccination or antibiotic therapy within the 72 hours prior to having any blood sample drawn Received any vaccine in the 28-day period prior to study vaccination, or scheduled to receive any vaccination during the 28-day period after study vaccination in Stage 1 of the trial. Suspected or known hypersensitivity to any of the vaccine components Unavailable for the entire study period or unable to attend the scheduled visits or to comply with the study procedures Enrolled in another clinical trial Any condition, which, in the opinion of the investigator, would pose a health risk to the participant or interfere with the evaluation of the vaccine.

Ages Eligible for Study
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Minimum Age: 3 Years
Maximum Age: 5 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Prevention
Allocation: Non-Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Previously received TetraMenD<br>Participants previously received one dose of a Meningococcal vaccine, TetraMenD in Study 603-02. | Biological: A/C/Y/W-135, Meningococcal Polysaccharide Vaccine (Menomune®)<br>* 0.05 mL, Subcutaneous<br>* Other names: Menomune®;|
| Experimental: Meningococcal vaccine-naїve<br>Participants have never received a Meningococcal vaccine in the past. | Biological: A/C/Y/W-135, Meningococcal Polysaccharide Vaccine (Menomune®)<br>* 0.05 mL, Subcutaneous<br>* Other names: Menomune®;|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Geometric Mean Titers (GMT) of Serum Bactericidal Activity for Each Vaccine Serogroups Before and Post-vaccination. |  | Day 0 and Days 8 and 28 post-vaccination | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Menactra®, Menomune®, Meningitis, Meningococcemia, Neisseria meningitidis