Persistence of Bactericidal Antibodies in Adolescents and Adults Who Had Received a Single Dose of Menactra® Vaccine

Subjects who received one dose of Menactra® or Menomune® in study MTA04, MTA12, MTA19 (NCT00777790), or MTA21 (NCT00777257) will be eligible for enrollment in trial this study. All eligible subjects will provide a blood sample at Visit 1, after which their participation in the study will be terminated. An age-matched meningococcal-vaccine naïve control group will be recruited to provide a blood sample for baseline antibody level evaluation.

No vaccine will be administered in this study.

Inclusion criteria

• For subjects aged ≥ 18 years: Informed consent form signed and dated by the subject
• For subjects aged < 18 years: Informed consent form signed and dated by the subject and the subject's parent/legal guardian
• Subject (and parent/legal guardian if subject is < 18 years of age) able to attend the scheduled visit and comply with all trial procedures
• For Group 1: Previously received only one dose of meningococcal vaccine (Menactra®, received in Study MTA04, MTA12, MTA19, or MTA21)
• For Group 2: Previously received only one dose of meningococcal vaccine (Menomune®, received in Study MTA04)
• For Group 3: Aged 14 through 27 years and never received any meningococcal vaccine

Exclusion criteria

• Participation in another clinical trial investigating a vaccine, drug, medical device, or a medical procedure in the 4 weeks preceding inclusion
• Known or suspected congenital or acquired immunodeficiency, immunosuppressive therapy such as anti-cancer chemotherapy or radiation therapy within the preceding 6 months, or long-term systemic corticosteroids therapy > 2 weeks
• Chronic illness at a stage that could interfere with trial conduct or completion, in the opinion of the investigator
• Current alcohol abuse or drug addiction that may interfere with the subject's ability to comply with trial procedures
• Receipt of blood or blood-derived products in the past 3 months that might interfere with the assessment of immune responses
• Known Human Immunodeficiency Virus (HIV), Hepatitis B, or Hepatitis C seropositivity
• History of invasive meningococcal disease (confirmed either clinically, serologically, or microbiologically)
• For Groups 1 and 2: Previous vaccination (including booster) against meningococcal disease, with the exception of the Menactra® or Menomune® vaccination received in trial MTA04, MTA12, MTA19, or MTA21
• Subjects deprived of freedom by an administrative or court order, or in an emergency setting, or hospitalized without his/her consent
• Received oral or injected antibiotic therapy within the 72 hours prior to the blood draw (temporary criteria)